shapecutdlg.cpp

一个国人自己实现图像库的程序（有参考价值）

// ShapeCutDLG.cpp : implementation file
//

#include "stdafx.h"
#include "picviewer.h"
#include "ShapeCutDLG.h"
#include "MainFrm.h"

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

const int	THUMBWIDTH = 30 ;
const int	THUMBHEIGHT = 40 ;
const int	nGap = 6 ; // the space between thumbnails
/////////////////////////////////////////////////////////////////////////////
// CShapeCutDLG dialog

CShapeCutDLG::CShapeCutDLG()
{
	//{{AFX_DATA_INIT(CShapeCutDLG)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}
CShapeCutDLG::~CShapeCutDLG()
{
}

void CShapeCutDLG::DoDataExchange(CDataExchange* pDX)
{
	DDX_Control (pDX, IDC_LIST_THUMBSHAPE, m_ListThumb) ;
	CDialogBarEx::DoDataExchange(pDX);
}

void CShapeCutDLG::OnInitDialogBar()
{
	FCFileFind			filefind ;
	int					nCount = 0 ;
	TCHAR				szExeName[MAX_PATH] ;
	TCHAR				szDriver[MAX_PATH] ;
	TCHAR				szPath[MAX_PATH] ;
	::GetModuleFileName (NULL, szExeName, MAX_PATH) ;
	::_splitpath (szExeName, szDriver, szPath, NULL, NULL) ;
	::_makepath (szExeName, szDriver, szPath, _T("shapes\\*.*"), NULL);
	// search directory "shapes" to get mask file name
	if (filefind.FindFile (szExeName))
	{
		nCount++ ;
		m_filename.push_back (CString(filefind.GetFullName ())) ;
		while (filefind.FindNext ())
		{
			nCount++ ;
			m_filename.push_back (CString(filefind.GetFullName ())) ;
		}
		filefind.FindClose () ;
	}
	else
		return ;

	// create and set the size of the image list
	m_ImageListThumb.Create (THUMBWIDTH, THUMBHEIGHT, ILC_COLOR24, 0, 1) ;
	m_ImageListThumb.SetImageCount (nCount) ;
	m_ListThumb.SetRedraw (FALSE) ;
	m_ListThumb.SetImageList (&m_ImageListThumb, LVSIL_NORMAL) ;

	// load mask file and make thumbnails
	nCount = 0 ;
	vector<CString>::iterator	iter ;
	for(iter = m_filename.begin() ; iter != m_filename.end() ; iter++, nCount++)
	{
		// load the bitmap and make thumbnail
		FCImage		* img = new FCImage () ;
		img->Load (*iter) ;
		img->Stretch (THUMBWIDTH, THUMBHEIGHT, 0) ;
		img->ConvertTo24Bit () ;

		// add bitmap to image list
		CBitmap		* pImage = new CBitmap() ;
		pImage->Attach (img->GetHandle ()) ;
		m_ImageListThumb.Replace (nCount, pImage, NULL) ;
		pImage->Detach () ;
		delete pImage ;
		delete img ;

		// insert mask thumbnail
		m_ListThumb.InsertItem(nCount, _T(""), nCount);

		// adjust current thumbnail position to desired position
		POINT		pt ;
		m_ListThumb.GetItemPosition (nCount, &pt) ;
		pt.x = nGap + nCount * (THUMBWIDTH + nGap) ;
		m_ListThumb.SetItemPosition (nCount, pt) ;
	}

	m_ListThumb.SetRedraw (TRUE) ;
	m_ListThumb.SetFocus () ;
	m_ListThumb.SetItemState (0, LVIS_SELECTED|LVIS_FOCUSED, LVIS_SELECTED|LVIS_FOCUSED) ;

	m_ListThumb.InvalidateRect (NULL) ;
}

BEGIN_MESSAGE_MAP(CShapeCutDLG, CDialogBarEx)
	//{{AFX_MSG_MAP(CShapeCutDLG)
	ON_NOTIFY(NM_CLICK, IDC_LIST_THUMBSHAPE, OnClickListThumbshape)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CShapeCutDLG message handlers

void CShapeCutDLG::OnClickListThumbshape(NMHDR* pNMHDR, LRESULT* pResult) 
{
	LPNMITEMACTIVATE	pItemAct = (LPNMITEMACTIVATE) pNMHDR ;

	if (pItemAct->iItem != -1)
	{
		FCImage		mask ;
		mask.Load ((CString)m_filename.at (pItemAct->iItem)) ;
		mask.ConvertToGray () ;

		RGBQUAD		rgb = {255,255,255,0} ;
		m_CurrImg.Create (mask.Width(), mask.Height(), 32) ;
		m_CurrImg.RegionFill (rgb) ;
		m_CurrImg.AppendAlphaChannel (mask) ;
//		m_CurrImg.InvertAlphaChannel () ;
	}
	*pResult = 0 ;
}