convedit.cpp

vc++6.0开发网络典型应用实例导航 1. 本光盘提供了本书中所有的实例源程序文件。 2. 附录文件夹下是Winsock 函数参考以及错误码列表

// ConvEdit.cpp : implementation file
//

#include "stdafx.h"
#include "Netmsg.h"
#include "ConvEdit.h"
#include "Conversation.h"
#include "ImageDataObject.h"
#include "ContactView.h"

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

//The edit boxes in the conversation dialogs
//or should I say... RICH edit, now anyway

CConvEdit::CConvEdit()
{
	m_lpConv = NULL;
}

CConvEdit::~CConvEdit()
{

}


BEGIN_MESSAGE_MAP(CConvEdit, CRichEditCtrl)
	//{{AFX_MSG_MAP(CConvEdit)
	ON_WM_DROPFILES()
	ON_WM_CREATE()
	ON_WM_CHAR()
	ON_WM_SYSCHAR()
	ON_WM_RBUTTONDOWN()
	ON_COMMAND(ID_MENU_COPY, OnMenuCopy)
	ON_COMMAND(ID_MENU_CUT, OnMenuCut)
	ON_COMMAND(ID_MENU_UNDO, OnMenuUndo)
	ON_COMMAND(ID_MENU_PASTE, OnMenuPaste)
	ON_WM_DESTROY()
	ON_WM_ERASEBKGND()
	ON_WM_SIZE()
	ON_WM_VSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CConvEdit message handlers

void CConvEdit::OnDropFiles(HDROP hDropInfo) 
{
	char FileName[2048];

	DragQueryFile(hDropInfo, 0, FileName, 2048);	

	if (m_lpConv)
	m_lpConv->FileDropped(FileName, 2048);

	DragFinish(hDropInfo);
}

int CConvEdit::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CRichEditCtrl::OnCreate(lpCreateStruct) == -1)
		return -1;
	DragAcceptFiles(TRUE);
	OleInitialize(NULL);

	return 0;
}

void CConvEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	if (nChar == 13)
	{
		int len = GetWindowTextLength();
		CConversation *Conv = (CConversation *)GetParent();
		Conv->OnSend();
	}
	else
	{
		CRichEditCtrl::OnChar(nChar, nRepCnt, nFlags);
		GetParent()->SendMessage(WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(), EN_CHANGE), (LPARAM) m_hWnd);
	}
}

void CConvEdit::OnSysChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{	
	CRichEditCtrl::OnSysChar(nChar, nRepCnt, nFlags);
}

void CConvEdit::Enable(bool bEnable)
{
	if (bEnable)
		ShowWindow(SW_SHOW);
	else
		ShowWindow(SW_HIDE);
}

BOOL CConvEdit::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext, CConversation *lpConv) 
{
	m_lpConv = lpConv;
	if (!::AfxInitRichEditEx())
    {
        return FALSE;
    }
	return CWnd::Create("RichEdit20A", lpszWindowName, dwStyle, rect, pParentWnd, nID, pContext);
}

BOOL CConvEdit::CreateEx(DWORD dwExStyle, LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, void *lpExtra, CConversation *lpConv) 
{
	m_lpConv = lpConv;
	if (!::AfxInitRichEditEx())
    {
        return FALSE;
    }
	return CWnd::CreateEx(dwExStyle, "RichEdit20A", lpszWindowName, dwStyle, rect, pParentWnd, nID, lpExtra);
}

_AFX_RICHEDITEX_STATE::_AFX_RICHEDITEX_STATE()
{
    m_hInstRichEdit20 = NULL;
}

_AFX_RICHEDITEX_STATE::~_AFX_RICHEDITEX_STATE()
{
    if (m_hInstRichEdit20 != NULL)
    {
        ::FreeLibrary(m_hInstRichEdit20);
    }
}

_AFX_RICHEDITEX_STATE _afxRichEditStateEx;

BOOL PASCAL AfxInitRichEditEx()
{
    if (!::AfxInitRichEdit())
    {
        return FALSE;
    }
    
    _AFX_RICHEDITEX_STATE* l_pState = &_afxRichEditStateEx;
    
    if (l_pState->m_hInstRichEdit20 == NULL)
    {
        l_pState->m_hInstRichEdit20 = LoadLibraryA("RICHED20.DLL");
    }
    
    return l_pState->m_hInstRichEdit20 != NULL;
}

char *stristr(const char * str1, const char * str2)
{
	char *cp = (char *) str1;
	char *s1, *s2;
	if ( !*str2 )
		return (char *) str1;
	while (*cp)
	{
		s1 = cp;
		s2 = (char *) str2;
		while ( *s1 && *s2 && ( !(*s1-*s2) ||
			!(*s1-tolower(*s2)) || !(*s1-toupper(*s2)) ) )
				s1++, s2++;
		if (!*s2)
			return cp;
		cp++;
	}
	return NULL;
}

void strstp(const char *in, char *before, const char *txt, char *after)
{
	char *cmp = stristr(in, txt);
	if (!cmp) return;
	strncpy(before, in, cmp - in);
	before[cmp - in] = 0;
	char *out = cmp + strlen(txt); 
	strcpy(after, out);
}

void CConvEdit::AppendWindowTextF(USERFONT *uf, int nIndent, const char *fmt, ...)
{
	va_list args;
	CHARFORMAT cf; 

	PARAFORMAT pf;

	pf.cbSize = sizeof(PARAFORMAT);
	pf.dwMask = PFM_OFFSETINDENT | PFM_RIGHTINDENT;
	pf.dxRightIndent = nIndent;
	pf.dxStartIndent = nIndent;

	SetParaFormat(pf);

	va_start(args, fmt);

	char buf[1024];

	_vsnprintf(buf, sizeof(buf), fmt, args);

	strrpl(buf, "$CRLF", "\r\n");

	char *s = buf;
	char before[1024], after[1024];
	int len = strlen(s); 

	memset(&cf, 0, sizeof(CHARFORMAT));

	cf.cbSize = sizeof(CHARFORMAT);
	cf.dwMask = CFM_COLOR | CFM_ITALIC | CFM_STRIKEOUT | CFM_BOLD | CFM_UNDERLINE | CFM_FACE | CFM_SIZE;
	strcpy(cf.szFaceName, uf->lfFont.lfFaceName);
	cf.yHeight = uf->nPointSize * 2;
	cf.crTextColor = uf->crColor;
	cf.bPitchAndFamily = uf->lfFont.lfPitchAndFamily;

	if (uf->lfFont.lfItalic) cf.dwEffects |= CFE_ITALIC;
	if (uf->lfFont.lfWeight >= FW_BOLD) cf.dwEffects |= CFE_BOLD;
	if (uf->lfFont.lfItalic) cf.dwEffects |= CFE_ITALIC;
	if (uf->lfFont.lfStrikeOut) cf.dwEffects |= CFE_STRIKEOUT;
	if (uf->lfFont.lfUnderline) cf.dwEffects |= CFE_UNDERLINE;

	if (AfxGetApp()->GetProfileInt("Settings", "UseEmoticons", 1))
	{
		for (;;)
		{
			char next[16] = { NULL }, *rpl = NULL;
			HBITMAP hbmNext = NULL;
			POSITION pos;
			CList<EMOTICON *, EMOTICON *> &Emoticons = GetApp()->View->Emoticons;
			pos = Emoticons.GetHeadPosition();

			while (pos)
			{
				EMOTICON *Emoticon = Emoticons.GetNext(pos);
				char *txt = stristr(s, Emoticon->szActivationText);
				if ((txt < rpl && txt) || !rpl && txt)
				{
					rpl = txt;
					hbmNext = Emoticon->hBitmap;
					strcpy(next, Emoticon->szActivationText);
				}
			}

			if (rpl)
			{
				strstp(s, before, next, after);
				AppendText(&cf, before);
				AppendBitmap(hbmNext);
				s = after;
			}
			else
			{
				if (strlen(s) > 0) AppendText(&cf, s);
				break;
			}
		}
	}
	else
	{
		AppendText(&cf, s);
	}

	pf.dxRightIndent = -nIndent;
	pf.dxStartIndent = -nIndent;

	SetParaFormat(pf);

}

int strcchr(const char *in, int chr)
{
	int ret = 0;
	while (*in++)
		if (*(in - 1) == chr) ret++;
	return ret;
}

void CConvEdit::AppendText(CHARFORMAT *pfmt, const char *text)
{
	int end;
	int len = GetWindowTextLength();
	char *buf = new char [GetWindowTextLength() + 1];

	GetWindowText(buf, GetWindowTextLength());

	SetSel(len, len);
	ReplaceSel(text);

	end = GetWindowTextLength();

	SetSel(len - strcchr(buf, '\n'), end);

	if (pfmt)
	{
		SetSelectionCharFormat(*pfmt);
	}
	SetSel(end, end);

	SendMessage(WM_VSCROLL, SB_BOTTOM, 0);
	UpdateScrollInfo();

	delete [] buf;
}

void CConvEdit::AppendBitmap(HBITMAP hbm)
{
	LineScroll(1);
	CImageDataObject::InsertBitmap(GetIRichEditOle(), this, hbm);
}

BOOL CConvEdit::PreCreateWindow(CREATESTRUCT& cs) 
{
	cs.style &= ~ES_WANTRETURN;	
	return CRichEditCtrl::PreCreateWindow(cs);
}

void CConvEdit::OnRButtonDown(UINT nFlags, CPoint point) 
{
	CPoint pos;
	CMenu Menu;
	CMenu *subMenu;
	
	GetCursorPos(&pos);

	Menu.LoadMenu(IDR_RICHEDITMENU);
	
	subMenu = Menu.GetSubMenu(0);
	
	SetForegroundWindow(); 
	subMenu->TrackPopupMenu(0, pos.x, pos.y, this, NULL);
	PostMessage(WM_NULL, 0, 0);

	CRichEditCtrl::OnRButtonDown(nFlags, point); 
}

void CConvEdit::OnMenuCopy() 
{
	Copy();
}

void CConvEdit::OnMenuCut() 
{
	Cut();
	GetParent()->SendMessage(WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(), EN_CHANGE), (LPARAM) m_hWnd);
}

void CConvEdit::OnMenuUndo() 
{
	Undo();	
	GetParent()->SendMessage(WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(), EN_CHANGE), (LPARAM) m_hWnd);
}

void CConvEdit::OnMenuPaste() 
{
	Paste();
	GetParent()->SendMessage(WM_COMMAND, MAKEWPARAM(GetDlgCtrlID(), EN_CHANGE), (LPARAM) m_hWnd);
}

void CConvEdit::OnDestroy() 
{
	SetWindowText(""); //VITAL!
	CRichEditCtrl::OnDestroy();
}

BOOL CConvEdit::OnEraseBkgnd(CDC* pDC) 
{
	return CRichEditCtrl::OnEraseBkgnd(pDC);
}

void CConvEdit::OnSize(UINT nType, int cx, int cy) 
{
	CRichEditCtrl::OnSize(nType, cx, cy);
	UpdateScrollInfo();
}

void CConvEdit::UpdateScrollInfo()
{
	RECT rect;
	SCROLLINFO sif;
	memset(&sif, 0, sizeof(SCROLLINFO));
	sif.cbSize = sizeof(SCROLLINFO);
	sif.fMask = SIF_ALL;
	GetClientRect(&rect);

	if (!GetScrollInfo(SB_VERT, &sif))
		return;

	if (sif.nMax > rect.bottom && sif.nPage)
	{
		if (!m_bHasScrollBar) 
		{
			CConversation *Conv;
			Conv = (CConversation *)GetParent();
			::SetTimer(Conv->m_bgWnd.m_hWnd, 1, 1, 0);
			::SetTimer(Conv->m_hWnd, 3, 1, 0);
		}
		m_bHasScrollBar = true;
	}
	else 
	{
		if (m_bHasScrollBar) GetParent()->RedrawWindow();
		m_bHasScrollBar = false;
	}
}

void CConvEdit::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	CRichEditCtrl::OnVScroll(nSBCode, nPos, pScrollBar);
}