progressdlg.cpp

俄罗斯人开发的大名鼎鼎的Pocket Pc 阅读器haaliread的源代码,visual c

/*
 * Copyright (c) 2001,2002,2003 Mike Matsnev.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice immediately at the beginning of the file, without modification,
 *    this list of conditions, and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Absolutely no warranty of function or purpose is made by the author
 *    Mike Matsnev.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * $Id: ProgressDlg.cpp,v 1.16.2.1 2003/04/12 22:52:33 mike Exp $
 * 
 */

#include <afxwin.h>
#include <afxtempl.h>

#include "resource.h"

#include "ptr.h"
#include "ProgressDlg.h"
#include "config.h"

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

#define	SHOWDELAY 700
#define MINUPDATE 500

/////////////////////////////////////////////////////////////////////////////
// CProgressDlg dialog


CProgressDlg::CProgressDlg(const CString& msg,CWnd* pParent /*=NULL*/)
: CDialog(CProgressDlg::IDD, pParent), m_msg(msg), m_last(0), m_tail(0), m_nsamp(0),
  m_curbytes(0), m_lastbytes(0), m_lastupdate(0)
{
#if POCKETPC
  m_bFullScreen=false;
#endif
  Create(CProgressDlg::IDD, pParent);
  CenterWindow();
  m_starttime=GetTickCount();
  m_visible=false;
  //{{AFX_DATA_INIT(CProgressDlg)
  // NOTE: the ClassWizard will add member initialization here
  //}}AFX_DATA_INIT
}


void CProgressDlg::DoDataExchange(CDataExchange* pDX)
{
  CDialog::DoDataExchange(pDX);
  //{{AFX_DATA_MAP(CProgressDlg)
  // NOTE: the ClassWizard will add DDX and DDV calls here
  //}}AFX_DATA_MAP
}

void	CProgressDlg::SetMax(DWORD max) {
  SendDlgItemMessage(IDC_PROGRESS,PBM_SETRANGE32,0,max);
  m_starttime=GetTickCount();
}

void	CProgressDlg::SetCur(DWORD cur) {
  if (cur>m_last) {
    m_last=(cur+65535)&~65535;
    SendDlgItemMessage(IDC_PROGRESS,PBM_SETPOS,cur);
    DWORD   tm=GetTickCount();
    DWORD   delta=cur-m_lastbytes;
    m_lastbytes=cur;
    // delete older samples
    while (m_nsamp>0 && (tm-m_samples[m_tail<<1]>1000 || m_nsamp==MAXSAMP)) {
      m_curbytes-=m_samples[(m_tail<<1)+1];
      if (++m_tail>=MAXSAMP)
	m_tail=0;
      --m_nsamp;
    }
    // append last sample
    DWORD   pos=m_tail+m_nsamp;
    if (pos>=MAXSAMP)
      pos-=MAXSAMP;
    m_samples[pos<<1]=tm;
    m_samples[(pos<<1)+1]=delta;
    m_curbytes+=delta;
    ++m_nsamp;
    if (!m_visible && tm-m_starttime>SHOWDELAY) {
      m_visible=true;
      ShowWindow(SW_SHOW);
      UpdateWindow();
    }
    if (m_visible && tm-m_lastupdate>MINUPDATE) { // calculate speed
      DWORD   timedelta=tm-m_samples[m_tail<<1];
      DWORD   speed=0;
      if (timedelta>0)
	speed=(DWORD)(((__int64)m_curbytes*1000/timedelta)>>10);
      TCHAR   buf[128];
      _sntprintf(buf,sizeof(buf)/sizeof(TCHAR),_T("%d KB  %d KB/s"),cur>>10,speed);
      SetDlgItemText(IDC_PROGRESSTEXT,buf);
      GetDlgItem(IDC_PROGRESSTEXT)->UpdateWindow();
      m_lastupdate=tm;
    }
  }
}

BEGIN_MESSAGE_MAP(CProgressDlg, CDialog)
//{{AFX_MSG_MAP(CProgressDlg)
//}}AFX_MSG_MAP
#if POCKETPC
ON_WM_SETTINGCHANGE()
#endif
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CProgressDlg message handlers

BOOL CProgressDlg::OnInitDialog() {
  CDialog::OnInitDialog();
  
  CString	  msg;
  msg.Format(_T("Loading %s..."),m_msg);
  SetWindowText(msg);

  return TRUE;
}

#if POCKETPC
void CProgressDlg::OnSettingChange(UINT uFlags,LPCTSTR lpszSection) {
  CWnd::OnSettingChange(uFlags,lpszSection);
}
#endif