htricheditctrl.cpp

电驴的源代码

			ReplaceSel(_T(""));

			// delete 1st line
			int iLine0Len = LineLength(0) + 2; // add NL character
			SetSel(0, iLine0Len);
			ReplaceSel(_T(""));

			// update any possible available selection
			iStartChar -= iLine0Len;
			if (iStartChar < 0)
				iStartChar = 0;
			iEndChar -= iLine0Len;
			if (iEndChar < 0)
				iEndChar = 0;

			// add the new line again
			nPos = GetWindowTextLength();
			AddString(nPos, pszLine, bLink, cr);

			if (m_bEnErrSpace && nPos == 0){
				// should never happen: if we tried to add the line another time in the 1st line, there 
				// will be no chance to add the line at all -> avoid endless loop!
				break;
			}
			iSafetyCounter++; // never ever create an endless loop!
		}
		m_bNoPaint = bOldNoPaint;
		if (bIsVisible && !m_bNoPaint){
			SetRedraw();
			if (m_bRichEdit)
				Invalidate();
		}
	}
}

void CHTRichEditCtrl::Reset(){
	m_astrBuff.RemoveAll();
	SetRedraw(FALSE);
	SetWindowText(_T(""));
	SetRedraw();
	if (m_bRichEdit)
		Invalidate();
}

void CHTRichEditCtrl::OnContextMenu(CWnd* pWnd, CPoint point){
	long iSelStart, iSelEnd;
	GetSel(iSelStart, iSelEnd);
	int iTextLen = GetWindowTextLength();

	m_LogMenu.EnableMenuItem(MP_COPYSELECTED, iSelEnd > iSelStart ? MF_ENABLED : MF_GRAYED);
	m_LogMenu.EnableMenuItem(MP_REMOVEALL, iTextLen > 0 ? MF_ENABLED : MF_GRAYED);
	m_LogMenu.EnableMenuItem(MP_SELECTALL, iTextLen > 0 ? MF_ENABLED : MF_GRAYED);
	m_LogMenu.EnableMenuItem(MP_SAVELOG, iTextLen > 0 ? MF_ENABLED : MF_GRAYED);
	m_LogMenu.CheckMenuItem(MP_AUTOSCROLL, m_bAutoScroll ? MF_CHECKED : MF_UNCHECKED);
	if (point.x == -1 && point.y == -1){
		point.x = 16;
		point.y = 32;
		ClientToScreen(&point);
	}
	m_LogMenu.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y, this);
}

BOOL CHTRichEditCtrl::OnCommand(WPARAM wParam, LPARAM lParam){
	switch (wParam) {
	case MP_COPYSELECTED:
		CopySelectedItems();
		break;
	case MP_SELECTALL:
		SelectAllItems();
		break;
	case MP_REMOVEALL:
		Reset();
		break;
	case MP_SAVELOG:
		SaveLog();
		break;
	case MP_AUTOSCROLL:
		m_bAutoScroll = !m_bAutoScroll;
		break;
	}
	return TRUE;
}

bool CHTRichEditCtrl::SaveLog(LPCTSTR pszDefName)
{
	bool bResult = false;
	CFileDialog dlg(FALSE, _T("log"), pszDefName ? pszDefName : (LPCTSTR)m_strTitle, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, _T("Log Files (*.log)|*.log||"), this, 0);
	if (dlg.DoModal() == IDOK)
	{
		FILE* fp = _tfsopen(dlg.GetPathName(), _T("wb"), _SH_DENYWR);
		if (fp)
		{
#ifdef _UNICODE
			// write Unicode byte-order mark 0xFEFF
			fputwc(0xFEFF, fp);
#endif
			CString strText;
			GetWindowText(strText);
			fwrite(strText, sizeof(TCHAR), strText.GetLength(), fp);
			if (ferror(fp)){
				CString strError;
				strError.Format(_T("Failed to write log file \"%s\" - %s"), dlg.GetPathName(), strerror(errno));
				AfxMessageBox(strError, MB_ICONERROR);
			}
			else
				bResult = true;
			fclose(fp);
		}
		else{
			CString strError;
			strError.Format(_T("Failed to create log file \"%s\" - %s"), dlg.GetPathName(), strerror(errno));
			AfxMessageBox(strError, MB_ICONERROR);
		}
	}
	return bResult;
}

CString CHTRichEditCtrl::GetLastLogEntry(){
	CString strLog;
	int iLastLine = GetLineCount() - 2;
	if (iLastLine >= 0){
		GetLine(iLastLine, strLog.GetBuffer(1024), 1024);
		strLog.ReleaseBuffer();
	}
	return strLog;
}

CString CHTRichEditCtrl::GetAllLogEntries(){
	CString strLog;
	GetWindowText(strLog);
	return strLog;
}

void CHTRichEditCtrl::SelectAllItems()
{
	SetSel(0, -1);
}

void CHTRichEditCtrl::CopySelectedItems()
{
	Copy();
}

void CHTRichEditCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if (nChar == 'A' && (GetKeyState(VK_CONTROL) & 0x8000))
	{
		//////////////////////////////////////////////////////////////////
		// Ctrl+A: Select all items
		SelectAllItems();
	}
	else if (nChar == 'C' && (GetKeyState(VK_CONTROL) & 0x8000))
	{
		//////////////////////////////////////////////////////////////////
		// Ctrl+C: Copy listview items to clipboard
		CopySelectedItems();
	}

	CRichEditCtrl::OnKeyDown(nChar, nRepCnt, nFlags);
}

static const struct
{
	LPCTSTR pszScheme;
	int iLen;
} _apszSchemes[] = 
{
	{ _T("ed2k://"),  7 },
	{ _T("http://"),  7 },
	{ _T("https://"), 8 },
	{ _T("ftp://"),   6 },
	{ _T("www."),     4 },
	{ _T("ftp."),     4 },
	{ _T("mailto:"),  7 }
};

void CHTRichEditCtrl::AppendText(const CString& sText, bool bInvalidate)
{
	LPCTSTR psz = sText;
	LPCTSTR pszStart = psz;
	while (*psz != _T('\0'))
	{
		bool bFoundScheme = false;
		for (int i = 0; i < ARRSIZE(_apszSchemes); i++)
		{
			if (_tcsncmp(psz, _apszSchemes[i].pszScheme, _apszSchemes[i].iLen) == 0)
			{
				// output everything before the URL
				if (psz - pszStart > 0){
					CString str(pszStart, psz - pszStart);
					AddLine(str, str.GetLength());
				}

				// search next space or EOL
				int iLen = _tcscspn(psz, _T(" \n\r\t"));
				if (iLen == 0){
					AddLine(psz, -1, true);
					psz += _tcslen(psz);
				}
				else{
					CString str(psz, iLen);
					AddLine(str, str.GetLength(), true);
					psz += iLen;
				}
				pszStart = psz;
				bFoundScheme = true;
				break;
			}
		}
		if (!bFoundScheme)
			psz = _tcsinc(psz);
	}

	if (*pszStart != _T('\0'))
		AddLine(pszStart, -1);
}

void CHTRichEditCtrl::AppendHyperLink(const CString& sText, const CString& sTitle, const CString& sCommand, const CString& sDirectory, bool bInvalidate)
{
	ASSERT( sText.IsEmpty() );
	ASSERT( sTitle.IsEmpty() );
	ASSERT( sDirectory.IsEmpty() );
	AddLine(sCommand, sCommand.GetLength(), true);
}

void CHTRichEditCtrl::AppendColoredText(LPCTSTR pszText, COLORREF cr)
{
	AddLine(pszText, -1, false, cr);
}

void CHTRichEditCtrl::AppendKeyWord(const CString& str, COLORREF cr)
{
	AppendColoredText(str, cr);
}

BOOL CHTRichEditCtrl::OnEnLink(NMHDR *pNMHDR, LRESULT *pResult)
{
	BOOL bMsgHandled = FALSE;
	*pResult = 0;
	ENLINK* pEnLink = reinterpret_cast<ENLINK *>(pNMHDR);
	if (pEnLink && pEnLink->msg == WM_LBUTTONDOWN)
	{
		CString strUrl;
		GetTextRange(pEnLink->chrg.cpMin, pEnLink->chrg.cpMax, strUrl);

		// check if that "URL" has a valid URL scheme. if it does not have, pass that notification up to the
		// parent window which may interpret that "URL" in some other way.
		for (int i = 0; i < ARRSIZE(_apszSchemes); i++){
			if (_tcsncmp(strUrl, _apszSchemes[i].pszScheme, _apszSchemes[i].iLen) == 0){
				ShellExecute(NULL, NULL, strUrl, NULL, NULL, SW_SHOWDEFAULT);
				*pResult = 1;
				bMsgHandled = TRUE; // do not route this message to any parent
				break;
			}
		}
	}
	return bMsgHandled;
}

CString CHTRichEditCtrl::GetText() const
{
	CString strText;
	GetWindowText(strText);
	return strText;
}
 
void CHTRichEditCtrl::SetFont(CFont* pFont, BOOL bRedraw)
{
	LOGFONT lf = {0};
	pFont->GetLogFont(&lf);

	CHARFORMAT cf = {0};
	cf.cbSize = sizeof cf;

	cf.dwMask |= CFM_BOLD;
	cf.dwEffects |= (lf.lfWeight == FW_BOLD) ? CFE_BOLD : 0;

	cf.dwMask |= CFM_ITALIC;
	cf.dwEffects |= (lf.lfItalic) ? CFE_ITALIC : 0;

	cf.dwMask |= CFM_UNDERLINE;
	cf.dwEffects |= (lf.lfUnderline) ? CFE_UNDERLINE : 0;

	cf.dwMask |= CFM_STRIKEOUT;
	cf.dwEffects |= (lf.lfStrikeOut) ? CFE_STRIKEOUT : 0;

	cf.dwMask |= CFM_SIZE;
	HDC hDC = ::GetDC(NULL);
	int iPointSize = -MulDiv(lf.lfHeight, 72, GetDeviceCaps(hDC, LOGPIXELSY));
	cf.yHeight = iPointSize * 20;
	::ReleaseDC(NULL, hDC);

	cf.dwMask |= CFM_FACE;
	cf.bPitchAndFamily = lf.lfPitchAndFamily;
	_tcsncpy(cf.szFaceName, lf.lfFaceName, ARRSIZE(cf.szFaceName));
	cf.szFaceName[ARRSIZE(cf.szFaceName) - 1] = _T('\0');

	// although this should work correctly (according SDK) it may give false results (e.g. the "click here..." text
	// which is shown in the server info window may not be entirely used as a hyperlink???)
//	cf.dwMask |= CFM_CHARSET;
//	cf.bCharSet = lf.lfCharSet;

	cf.yOffset = 0;
	VERIFY( SetDefaultCharFormat(cf) );
	VERIFY( GetSelectionCharFormat(m_cfDefault) );

	if (bRedraw){
		Invalidate();
		UpdateWindow();
	}
}

CFont* CHTRichEditCtrl::GetFont() const
{
	ASSERT(0);
	return NULL;
}

void CHTRichEditCtrl::OnSysColorChange()
{
	CRichEditCtrl::OnSysColorChange();
	ApplySkin();
}

void CHTRichEditCtrl::ApplySkin()
{
	if (!m_strSkinKey.IsEmpty())
	{
		COLORREF cr;
		if (theApp.LoadSkinColor(m_strSkinKey + _T("Bk"), cr))
		{
			SetBackgroundColor(FALSE, cr);
		}
		else
		{
			SetBackgroundColor(TRUE, GetSysColor(COLOR_WINDOW));
		}
	}
}