yheditcell.cpp

一个实用的GIS系统的系统维护模块

// YHEditCell.cpp : implementation file
//

#include "stdafx.h"
#include "yhgl.h"
#include "YHEditCell.h"
#include "XListCtrl.h"


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



CYHEditCell::CYHEditCell( CXListCtrl* userlist, 
                            int nItem, int nSubItem, CString csInitText,bool editDoubleLimitged)
{
    m_userlist  = userlist;
    m_nItem      = nItem;
    m_nSubItem   = nSubItem;
    m_csInitText = csInitText;
    m_bUndo      = false;
	bLimitedToDouble = editDoubleLimitged;
}

CYHEditCell::~CYHEditCell()
{
}


BEGIN_MESSAGE_MAP(CYHEditCell, CEdit)
	//{{AFX_MSG_MAP(CYHEditCell)
	ON_WM_KILLFOCUS()
    ON_WM_NCDESTROY()
	ON_WM_CHAR()
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CYHEditCell message handlers

// Set list item text
void CYHEditCell::SetListItemText()
{
    CString csText;
	GetWindowText( csText );
    m_userlist->SetItemText( m_nItem, m_nSubItem, csText,RGB(255,255,255),RGB(0,0,255));
	if (!bLimitedToDouble)
    m_userlist->updateStringItem( m_nItem, m_nSubItem, csText );
    UpdateWindow();

}

BOOL CYHEditCell::PreTranslateMessage(MSG* pMsg) 
{
	if ( pMsg->message == WM_KEYDOWN )
    {
	    if (  pMsg->wParam == VK_RETURN  || pMsg->wParam == VK_DELETE 
            || pMsg->wParam == VK_ESCAPE || pMsg->wParam == VK_TAB 
            || pMsg->wParam == VK_UP     || pMsg->wParam == VK_DOWN 
            || GetKeyState(VK_CONTROL) )
        {
		    ::TranslateMessage( pMsg );
			::DispatchMessage ( pMsg );
			return TRUE;		    	// DO NOT process further
        }
    }
    return CEdit::PreTranslateMessage( pMsg );
}

int CYHEditCell::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CEdit::OnCreate(lpCreateStruct) == -1)
	return -1;
	// --- Set the proper font ---
    CFont* pFont = m_userlist->GetFont();
    SetFont( pFont );
    SetWindowText( m_csInitText );
    SetFocus();
    return 0;
}

void CYHEditCell::OnKillFocus(CWnd* pNewWnd) 
{
	CEdit::OnKillFocus(pNewWnd);
    if ( m_bUndo == true )  // User press 'ESC' button
    {
    }
    else
       SetListItemText(); 
    DestroyWindow();
}

void CYHEditCell::OnNcDestroy() 
{
	CEdit::OnNcDestroy();
    delete this;
}

void CYHEditCell::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
    bool bShift = ( GetKeyState(VK_SHIFT) ) < 0;
    switch ( nChar )
    {
		case VK_ESCAPE :
		{
			if ( nChar == VK_ESCAPE )
				 m_bUndo = true;
			GetParent()->SetFocus();
			return;
		}
		case VK_RETURN :
		{
			SetListItemText();
			return;
		}
	  default:
			if (bLimitedToDouble)
			{
				if (nChar == 8)
					CEdit::OnChar(nChar, nRepCnt, nFlags);

				POINT caret;
				::GetCaretPos (&caret);
				caret.x = LOWORD (CharFromPos (caret));

				CString text;
				GetWindowText (text);

				if (isdigit(nChar)) 
					CEdit::OnChar(nChar, nRepCnt, nFlags);
				else if (nChar == '-')
				{
					if (!caret.x)
					{
						if (((text.GetLength() > 0) && (text[0]!='-')) || (text.GetLength()==0))
							CEdit::OnChar(nChar, nRepCnt, nFlags);
					}
					else
					{
						if ((text [caret.x-1] == 'e') || (text [caret.x-1] == 'E'))
							CEdit::OnChar(nChar, nRepCnt, nFlags);
					}
				}
				else if ((nChar == 'e') || (nChar == 'E'))
				{
					if ((caret.x == 1) && (text[0] == '-'))
						return ;

					if (caret.x)
					{
						for (int i=0; i<text.GetLength(); i++)
						{
							if ((text[i] == 'e') ||(text[i] == 'E'))
								return ;
						}
						CEdit::OnChar(nChar, nRepCnt, nFlags);
					}
				}
				else if (nChar == '.')
				{
					for (int i=0; i<text.GetLength(); i++)
					{
						if (text[i] == '.')
							return ;
					}

					for (i=0; i<text.GetLength(); i++)
					{
						if (((text[i] == 'e') ||(text[i]=='E')) && (caret.x > i))
							return ;
					}

					CEdit::OnChar(nChar, nRepCnt, nFlags);
				}
			}
			else
				CEdit::OnChar(nChar, nRepCnt, nFlags);
			return;
	}
}

void CYHEditCell::SetDoubleValue(double val)
{
	if (bLimitedToDouble)
	{
		CString tmp;
		tmp.Format ("%G",val);
		SetWindowText (tmp);
	}
}

double CYHEditCell::GetDoubleValue()
{
	if (bLimitedToDouble)
	{
		CString tmp;
		GetWindowText (tmp);
		return strtod (tmp,NULL);
	}
	return 0;
}