hyperlink.cpp

主要用于一般的程序

		g_crHoverColor = ::GetSysColor(COLOR_HIGHLIGHT);
	else
		g_crHoverColor = crHoverColor;	
}

void CHyperLink::SetColors(HYPERLINKCOLORS& linkColors) {
	g_crLinkColor	 = linkColors.crLink;
	g_crActiveColor	 = linkColors.crActive;
	g_crVisitedColor = linkColors.crVisited;
	g_crHoverColor	 = linkColors.crHover;
}

void CHyperLink::GetColors(HYPERLINKCOLORS& linkColors) {
	linkColors.crLink = g_crLinkColor;
	linkColors.crActive = g_crActiveColor;
	linkColors.crVisited = g_crVisitedColor;
	linkColors.crHover = g_crHoverColor;
}

void CHyperLink::SetLinkCursor(HCURSOR hCursor) {
	ASSERT(hCursor != NULL);

	g_hLinkCursor = hCursor;
	if (g_hLinkCursor == NULL)
		SetDefaultCursor();
}

HCURSOR CHyperLink::GetLinkCursor() {
	return g_hLinkCursor;
}

BOOL CHyperLink:: ModifyLinkStyle(DWORD dwRemove, DWORD dwAdd,
								  BOOL bApply /* =TRUE */)
{
	// Check if we are adding and removing the same style
	if ((dwRemove & dwAdd) != 0L)
		return FALSE;

	// Remove old styles and set the new ones
	CLEARBITS(m_dwStyle, dwRemove);
	SETBITS(m_dwStyle, dwAdd);
		
	if (bApply && ::IsWindow(GetSafeHwnd())) {
		// If possible, APPLY the new styles on the fly
		if (BITSET(dwAdd,StyleUnderline) || BITSET(dwRemove,StyleUnderline))
			SwitchFont();
		if (BITSET(dwAdd,StyleItalic) || BITSET(dwRemove,StyleItalic))
			SwitchFont();
		if (BITSET(dwAdd,StyleAutoSize))
			AdjustWindow();		
		if (BITSET(dwRemove,StyleUseHover))
			Invalidate();
	}
	return TRUE;
}

DWORD CHyperLink::GetLinkStyle() const {
	return m_dwStyle;
}

void CHyperLink::SetURL(CString strURL,CString strTip)
{
	m_strURL = strURL;

	if (::IsWindow(GetSafeHwnd())) {
		ShowWindow(SW_HIDE);
		AdjustWindow();
		if (strTip=="")
		 m_ToolTip.UpdateTipText(strURL, this, TOOLTIP_ID);
		else
         m_ToolTip.UpdateTipText(strTip, this, TOOLTIP_ID);
		ShowWindow(SW_SHOW);
	}
}

void CHyperLink::SetTip(CString strTip)
{
     m_ToolTip.UpdateTipText(strTip, this, TOOLTIP_ID);
}

CString CHyperLink::GetURL() const { 
	return m_strURL;   
}

void CHyperLink::SetWindowText(LPCTSTR lpszText)
{
	ASSERT(lpszText != NULL);

	if (::IsWindow(GetSafeHwnd())) {
		// Set the window text and adjust its size while the window
		// is kept hidden in order to allow dynamic modification
		ShowWindow(SW_HIDE);				// Hide window
		// Call the base class SetWindowText()
		CStatic::SetWindowText(lpszText);
		// Resize the control if necessary
		AdjustWindow();
		ShowWindow(SW_SHOW);				// Show window
	}
}

void CHyperLink::SetFont(CFont* pFont)
{
	ASSERT(::IsWindow(GetSafeHwnd()));
	ASSERT(pFont != NULL);
	
	// Set the window font and adjust its size while the window
	// is kept hidden in order to allow dynamic modification
	ShowWindow(SW_HIDE);				// Hide window
	LOGFONT lf;
	// Create the new font
	pFont->GetLogFont(&lf);
	m_Font.DeleteObject();
	m_Font.CreateFontIndirect(&lf);
	// Call the base class SetFont()
	CStatic::SetFont(&m_Font);
	// Resize the control if necessary
	AdjustWindow();
	ShowWindow(SW_SHOW);				// Show window	
}

// Function to set underline on/off
void CHyperLink::SwitchFont()
{	
	LOGFONT lf;
	CFont* pFont = GetFont();
	if (pFont != NULL) {
		pFont->GetLogFont(&lf);		
		lf.lfUnderline = BITSET(m_dwStyle,StyleUnderline);
		lf.lfItalic=BITSET(m_dwStyle,StyleItalic);
		m_Font.DeleteObject();
		m_Font.CreateFontIndirect(&lf);
		SetFont(&m_Font);					
	}	
}

// Move and resize the window so that its client area has the same size
// as the hyperlink text. This prevents the hyperlink cursor being active
// when it is not over the text.
void CHyperLink::AdjustWindow()
{	
	ASSERT(::IsWindow(GetSafeHwnd()));
    
	if (!BITSET(m_dwStyle,StyleAutoSize)) 
        return;

    // Get the current window rect
    CRect rcWnd;
    GetWindowRect(rcWnd);

	// For a child CWnd object, window rect is relative to the 
	// upper-left corner of the parent window抯 client area. 
    CWnd* pParent = GetParent();
    if (pParent)
        pParent->ScreenToClient(rcWnd);
	
	// Get the current client rect
	CRect rcClient;
	GetClientRect(rcClient);

	// Calc border size based on window and client rects
	int borderWidth = rcWnd.Width() - rcClient.Width();
	int borderHeight = rcWnd.Height() - rcClient.Height();

    // Get the extent of window text 
    CString strWndText;
    GetWindowText(strWndText);
	
    CDC* pDC = GetDC();	
    CFont* pOldFont = pDC->SelectObject(&m_Font);
    CSize Extent = pDC->GetTextExtent(strWndText);
    pDC->SelectObject(pOldFont);
    ReleaseDC(pDC);

    // Get the text justification style
    DWORD dwStyle = GetStyle();

    // Recalc window size and position based on text justification
    if (BITSET(dwStyle, SS_CENTERIMAGE))
		rcWnd.DeflateRect(0, (rcWnd.Height() - Extent.cy) / 2);
    else
		rcWnd.bottom = rcWnd.top + Extent.cy;

    if (BITSET(dwStyle, SS_CENTER))
		rcWnd.DeflateRect((rcWnd.Width() - Extent.cx) / 2, 0);
    else if (BITSET(dwStyle,SS_RIGHT))
		rcWnd.left  = rcWnd.right - Extent.cx;
	else // SS_LEFT
		rcWnd.right = rcWnd.left + Extent.cx;

	// Move and resize the window
	MoveWindow(rcWnd.left, rcWnd.top, rcWnd.Width() + borderWidth,
		rcWnd.Height() + borderHeight);
}

void CHyperLink::SetVisited(BOOL bVisited /* = TRUE */) {
	m_bVisited = bVisited;
}

BOOL CHyperLink::IsVisited() const {
	return m_bVisited;
}

/////////////////////////////////////////////////////////////////////////////
// CHyperLink implementation

// The following function appeared in Paul DiLascia's Jan 1998 
// MSJ articles. It loads a "hand" cursor from "winhlp32.exe"
// resources
void CHyperLink::SetDefaultCursor()
{
	if (g_hLinkCursor == NULL)		// No cursor handle - load our own
	{
        g_hLinkCursor=AfxGetApp()->LoadCursor("HYPERLINK");
	}
}

LONG CHyperLink::GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata)
{
    HKEY hkey;
    LONG retval = RegOpenKeyEx(key, subkey, 0, KEY_QUERY_VALUE, &hkey);

    if (retval == ERROR_SUCCESS) {
        long datasize = MAX_PATH;
		TCHAR data[MAX_PATH];
		RegQueryValue(hkey, NULL, data, &datasize);
		lstrcpy(retdata,data);
		RegCloseKey(hkey);
    }

    return retval;
}


// "GotoURL" function by Stuart Patterson
// As seen in the August, 1997 Windows Developer's Journal.
HINSTANCE CHyperLink::GotoURL(LPCTSTR url, int showcmd)
{
    TCHAR key[MAX_PATH + MAX_PATH];	

    // First try ShellExecute()
    HINSTANCE result = ShellExecute(NULL, _T("open"), url, NULL,NULL, showcmd);

    // If it failed, get the .htm regkey and lookup the program
    if ((UINT)result <= HINSTANCE_ERROR) {		
		
        if (GetRegKey(HKEY_CLASSES_ROOT, _T(".htm"), key) == ERROR_SUCCESS) {
            lstrcat(key, _T("\\shell\\open\\command"));

            if (GetRegKey(HKEY_CLASSES_ROOT,key,key) == ERROR_SUCCESS) {
                TCHAR *pos;
                pos = _tcsstr(key, _T("\"%1\""));
                if (pos == NULL) {                     // No quotes found
                    pos = strstr(key, _T("%1"));       // Check for %1, without quotes
                    if (pos == NULL)                   // No parameter at all...
                        pos = key+lstrlen(key)-1;
                    else
                        *pos = '\0';                   // Remove the parameter
                }
                else
                    *pos = '\0';                       // Remove the parameter

                lstrcat(pos, _T(" "));
                lstrcat(pos, url);
                result = (HINSTANCE) WinExec(key,showcmd);
            }
        }
	}
	  
    return result;
}

// Activate the link
void CHyperLink::FollowLink() 
{	
	int result = (int) GotoURL(m_strURL, SW_SHOW);
    if (result <= HINSTANCE_ERROR) 
	{
        MessageBeep(MB_ICONEXCLAMATION);	// 不能跳到链接
  	    CString str = "不能打开链接:\n\n" + ReportError(result);
	    AfxMessageBox(str, MB_ICONEXCLAMATION | MB_OK);    
    }
	else 
	{
		// 标记链接已访问过，并重画窗口
		m_bVisited = TRUE;		
		Invalidate();
	}
}

//激活提示Activate
void CHyperLink::ActivateToolTip(BOOL Activate)
{
	m_ToolTip.Activate(Activate);
}