picimgdlg.cpp

基于EVC开发的图片集文件浏览和图片浏览为一体的程序

// PicImgDlg.cpp : implementation file
//

#include "stdafx.h"
#include "PicImg.h"
#include "PicImgDlg.h"

#include "FullPic.h"
#include <imaging.h>
#include <initguid.h>
#include <imgguids.h>
#include "Help.h"

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

/////////////////////////////////////////////////////////////////////////////
// Global Variable


/////////////////////////////////////////////////////////////////////////////
// CPicImgDlg dialog
CPicImgDlg::CPicImgDlg(CWnd* pParent /*=NULL*/)
: CDialog(CPicImgDlg::IDD, pParent)
{
	m_curbmpptr = NULL;
	//{{AFX_DATA_INIT(CPicImgDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CPicImgDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CPicImgDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CPicImgDlg, CDialog)
//{{AFX_MSG_MAP(CPicImgDlg)
ON_BN_CLICKED(IDC_LIST, OnList)
ON_WM_PAINT()
ON_BN_CLICKED(IDC_FULLSCREEN, OnFullscreen)
ON_BN_CLICKED(IDC_NEXT, OnNext)
ON_BN_CLICKED(IDC_PREVIOUS, OnPrevious)
ON_BN_CLICKED(IDC_ZOOMIN, OnZoomin)
ON_BN_CLICKED(IDC_ZOOMOUT, OnZoomout)
	ON_BN_CLICKED(ID_BACK, OnBack)
	ON_WM_LBUTTONUP()
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_HELP, OnHelp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPicImgDlg message handlers

BOOL CPicImgDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
    this->SetWindowPos(NULL,0,0,640,480,SWP_NOZORDER);
	this->SetWindowText(_T("ImageViewer"));

	//打开按键光
	m_light = NULL;       //灯灭的句柄无效
	m_signal = TRUE;
	//定时器的设置
    SetTimer(1128,10000,NULL);           //修改按键灯灭
    m_light = CreateFile(L"DSK2:",GENERIC_READ|GENERIC_WRITE,0,NULL,
		                   OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);

	m_bg.LoadBitmap(IDB_BG);

	m_rate = 1000;
	// 设置显示区大小
	m_rtimage	= CRect(16,44,548,443);		// 图象显示区大小
	m_rtopen	= CRect(561,426,631,476);		// 图象打开
	m_rtfullscreen	= CRect(561,126,631,176);	// 图象全屏
	m_rtprv		= CRect(561,306,631,356);		// 前一张
	m_rtnext	= CRect(561,366,631,416);		// 下一张
	m_rtzoomin	= CRect(561,246,631,296);		// 放大
	m_rtzoomout	= CRect(561,186,631,236);		// 缩小
	m_rtclose	= CRect(590,0,630,30);		// 关闭
	m_rtname = CRect(100,0,540,30);
	m_rthelp = CRect(540,0,580,30);
	m_fullflag = FALSE;
	m_curbmpptr = NULL;
	if(m_curfile!="")
	{
		SetTimer(88,0,0);
	}
	else
	{
		OnOK();
	}

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CPicImgDlg::OnList() 
{
	PictureSkim mypicturescan;
	int n_Response=mypicturescan.DoModal();
	if(n_Response==IDOK)
	{
		// 文件正常打开
		if(mypicturescan.filename!="")
		{
			m_curfile =mypicturescan.filename;
			m_rate = 1000;
		}
		else 
			return;
	}
	else
		return;
	ShowImage();

}

// 将文件读到内存
HBITMAP CPicImgDlg::ImgConvert(CString strFileName)
{
	IImage* m_pImage = NULL;
	IImagingFactory* m_pImagingFactory = NULL;
    CoInitializeEx(NULL, COINIT_MULTITHREADED);
	HRESULT hr = CoCreateInstance(CLSID_ImagingFactory,
								NULL,
								CLSCTX_INPROC_SERVER,
								IID_IImagingFactory,
								(void **)&m_pImagingFactory);
	
	HBITMAP hBitmap = 0;
	ImageInfo imageInfo;
	
	if (SUCCEEDED(hr))
	{
		hr = m_pImagingFactory->CreateImageFromFile(strFileName, &m_pImage);//从内存中读取图片
		if (FAILED(hr)) 
		{ 
			return 0; 
		} 
		
		m_pImage->GetImageInfo(&imageInfo);
		
		CWindowDC dc(0); 
        CDC dcBitmap; 
        dcBitmap.CreateCompatibleDC(&dc); 
		hBitmap = CreateCompatibleBitmap(dc.GetSafeHdc(), imageInfo.Width, imageInfo.Height); 
		
		if (hBitmap) 
		{ 
            HGDIOBJ hOldBitmap = dcBitmap.SelectObject(hBitmap); 
            m_pImage->Draw(dcBitmap.GetSafeHdc(), CRect(0, 0, imageInfo.Width, imageInfo.Height), NULL); 
            dcBitmap.SelectObject(hOldBitmap); 
		} 
		
		m_pImage->Release(); 
	} 
	m_pImagingFactory->Release(); 
	CoUninitialize(); 
	
	return hBitmap; 
}

void CPicImgDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting

	CDC memdc;
	memdc.CreateCompatibleDC(&dc);
	memdc.SelectObject(m_bg);
	dc.BitBlt(0,0,640,480,&memdc,0,0,SRCCOPY);

	HGDIOBJ hOldBitmap = memdc.SelectObject(m_curbmpptr);  //内存目标

	CBrush br(RGB(0,0,0));
	
	int show_x,show_y,show_w,show_h;
	int src_x,src_y,src_w,src_h;


	BITMAP bm;
	if (m_curbmpptr!=NULL)
		m_curbmpptr->GetObject(sizeof(bm), &bm);
	else
	{
		memdc.DeleteDC();
		return;
	}

    //全屏的时候是没有放大和缩小的，在这里应该隐藏按钮的。
	if (m_fullflag)
	{
		// 区域
		if (ifullwidth * m_rate > 640 * 1000)
		{
			src_w = (640*bm.bmWidth*1000)/(m_rate*ifullwidth);
			src_x = (bm.bmWidth - src_w)/2;
		}	
		else
		{
			src_x = 0;
			src_w = bm.bmWidth;
		}

		if (ifullheight * m_rate > 480 * 1000)
		{
			src_h = (480*bm.bmHeight*1000)/(m_rate*ifullheight);
			src_y = (bm.bmHeight - src_h)/2;
		}		
		else
		{
			src_y = 0;
			src_h = bm.bmHeight;
		}

		if ((640-ifullwidth*m_rate/1000)/2 > 0)
		{
			show_x = (640-ifullwidth*m_rate/1000)/2;
            show_w = ifullwidth*m_rate/1000;
		}			
		else
		{
			show_x = 0;
			show_w = 640;
		}
			

		if ((480-ifullheight*m_rate/1000)/2 > 0)
		{
			show_y = (480-ifullheight*m_rate/1000)/2;
			show_h = ifullheight*m_rate/1000;
		}			
		else
		{
			show_y = 0;
			show_h = 480;
		}
		//画图
		dc.FillRect(CRect(0,0,640,480),&br);
		dc.StretchBlt(show_x, show_y, show_w, show_h, &memdc, src_x,src_y,src_w,src_h, SRCCOPY);

	}
	else
	{
		// 区域
		if (iareawidth * m_rate > m_rtimage.Width() * 1000)
		{
			src_w = (m_rtimage.Width()*bm.bmWidth*1000)/(m_rate*iareawidth);
			src_x = (bm.bmWidth - src_w)/2;
		}	
		else
		{
			src_x = 0;
			src_w = bm.bmWidth;
		}

		if (iareaheight * m_rate > m_rtimage.Height() * 1000)
		{
			src_h = (m_rtimage.Height()*bm.bmHeight*1000)/(m_rate*iareaheight);
			src_y = (bm.bmHeight - src_h)/2;
		}		
		else
		{
			src_y = 0;
			src_h = bm.bmHeight;
		}

		if ((m_rtimage.Width()-iareawidth*m_rate/1000)/2 > 0)
		{
			show_x = (m_rtimage.Width()-iareawidth*m_rate/1000)/2;
            show_w = iareawidth*m_rate/1000;
		}
			
		else
		{
			show_x = 0;
			show_w = m_rtimage.Width();
		}
			

		if ((m_rtimage.Height()-iareaheight*m_rate/1000)/2 > 0)
		{
			show_y = (m_rtimage.Height()-iareaheight*m_rate/1000)/2;
			show_h = iareaheight*m_rate/1000;
		}
			
		else
		{
			show_y = 0;
			show_h = m_rtimage.Height();
		}
		//画图		
		dc.FillRect(&m_rtimage,&br);
		dc.StretchBlt(m_rtimage.left+show_x, m_rtimage.top+show_y, show_w, show_h, &memdc, src_x,src_y,src_w,src_h, SRCCOPY);

	}
	//把字的区域显示出来
	CFont ft;
	ft.CreateFont(
		25,                        // nHeight
		0,                         // nWidth
		0,                         // nEscapement
		0,                         // nOrientation
		FW_NORMAL,                 // nWeight
		FALSE,                     // bItalic
		FALSE,                     // bUnderline
		0,                         // cStrikeOut
		ANSI_CHARSET,              // nCharSet
		OUT_DEFAULT_PRECIS,        // nOutPrecision
		CLIP_DEFAULT_PRECIS,       // nClipPrecision
		DEFAULT_QUALITY,           // nQuality
		DEFAULT_PITCH | FF_SWISS,  // nPitchAndFamily
		_T("Arial"));  
	dc.SelectObject(&ft);
	dc.SetBkMode(TRANSPARENT); 
	dc.DrawText(m_filename,m_rtname,DT_CENTER|DT_VCENTER);
	ft.DeleteObject();
	memdc.SelectObject(hOldBitmap); 
	memdc.DeleteDC();
}

void CPicImgDlg::OnFullscreen() 
{
	m_fullflag = !m_fullflag;
	RedrawWindow();
}

BOOL CPicImgDlg::OnNext() 
{
	
	// TODO: Add your control notification handler code here
	if(m_curfile=="")
		return FALSE;
	else
	{
        CString strname = m_curfile;
		CString strpath;
		CString fullformat;
		CString fixname;
		int i;
		i = strname.ReverseFind('\\');
		strpath = strname.Left( i );
		fullformat = strpath + "\\*.*";
        WIN32_FIND_DATA fd;
		HANDLE hFind = FindFirstFile(fullformat,&fd);
		int a = TRUE;
		while((hFind != INVALID_HANDLE_VALUE) &&a)
		{
			
			if( wcscmp( m_curfile,strpath + "\\" + fd.cFileName ) )
			{
				a = ::FindNextFile(hFind,&fd); //a是判断是否还有文件.
			}
			else
			{
				a = ::FindNextFile(hFind,&fd);
				//在这里判断是不是最后一幅.
				if( a != FALSE )
				{
					splitpath ( fd.cFileName, fixname );
					fixname.MakeLower();
					if ( !wcscmp ( fixname, _T(".jpg") ) || !wcscmp ( fixname, _T(".bmp") ) )
					{
						m_curfile = strpath + "\\" + fd.cFileName;
						a = FALSE;
						ShowImage();   //防止不是需要的文件时候出错。
					}
					else               //防止是文件夹的情况.
						m_curfile = strpath + "\\" + fd.cFileName;
				}
				else
				{
					//找到第一个文件,判断它的类型,hFind要重新指定第一个句柄
					hFind = FindFirstFile(fullformat,&fd);
					splitpath ( fd.cFileName, fixname );
					fixname.MakeLower();
					if ( !wcscmp ( fixname, _T(".jpg") ) || !wcscmp ( fixname, _T(".bmp") ) )
					{
						m_curfile = strpath + "\\" + fd.cFileName;

						ShowImage();   //防止不是需要的文件时候出错。
					}
					else               //防止是文件夹的情况.
					{
						//第一个文件不一定是图片文件,需要继续往下找,要把a置TRUE.
						a = TRUE;
						m_curfile = strpath + "\\" + fd.cFileName;
					}						
				}
			}

		}
		FindClose(hFind);
	}
	return TRUE;
}
//如果要实现到第一个后能够上翻到最后一个,就要加一个函数能够找到第一个和最后一个图片的文件名
BOOL CPicImgDlg::OnPrevious() 
{
	if(m_curfile=="")
		return FALSE;
	else if( m_curfile == GetFirstName() )
	{
		m_curfile = GetLastName();
		ShowImage();