lyfz_repos/经典版源码/lyfzClient/trunk/3.0.0.0/HyperLink.cpp

// HyperLink.cpp : implementation file
//
// HyperLink static control. Will open the default browser with the given URL
// when the user clicks on the link.
//
// Copyright (C) 1997, 1998 Chris Maunder (chrismaunder@codeguru.com)
// All rights reserved. May not be sold for profit.
//
// Thanks to Pål K. Tønder for auto-size and window caption changes.
//
// "GotoURL" function by Stuart Patterson
// As seen in the August, 1997 Windows Developer's Journal.
// Copyright 1997 by Miller Freeman, Inc. All rights reserved.
// Modified by Chris Maunder to use TCHARs instead of chars.
//
// "Default hand cursor" from Paul DiLascia's Jan 1998 MSJ article.
//

#include "stdafx.h"
#include "HyperLink.h"
#include "ylgl.h"
#include "PreviewDlg.h"
#include <strsafe.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define TOOLTIP_ID 1


/////////////////////////////////////////////////////////////////////////////
// CHyperLink
CHyperLink::CHyperLink()
{
	m_hLinkCursor = NULL;                 // No cursor as yet
	m_crLinkColour = RGB(161, 161, 161);   // Blue
	m_crHoverColour = RGB(222, 222, 222);   // Blue
	m_bOverControl = FALSE;                // Cursor not yet over control
	m_bVisited = FALSE;                // Hasn't been visited yet.
	m_bUnderline = TRUE;                 // Underline the link?
	m_bAdjustToFit = TRUE;                 // Resize the window to fit the text?
	m_strURL.Empty();
	m_fontsize = 90;
	m_bDisable = 0;
	m_nParent = -1;
	m_bBlackBk = 0;
}

CHyperLink::~CHyperLink()
{
	m_Font.DeleteObject();
}

BEGIN_MESSAGE_MAP(CHyperLink, CStatic)
	//{{AFX_MSG_MAP(CHyperLink)
	ON_WM_CTLCOLOR_REFLECT()
	ON_WM_SETCURSOR()
	ON_WM_MOUSEMOVE()
	ON_CONTROL_REFLECT(STN_CLICKED, OnClicked)
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHyperLink message handlers

BOOL CHyperLink::PreTranslateMessage(MSG* pMsg)
{
	//  m_ToolTip.RelayEvent(pMsg);
	return CStatic::PreTranslateMessage(pMsg);
}

void CHyperLink::OnClicked()
{
	CString strWndText;
	GetWindowText(strWndText);
	if (m_bBlackBk == 0)
		g_pMainWnd->LinkClick(strWndText, m_nParent);
	else
		((PreviewDlg*)GetParent())->LinkClick(strWndText);
	/* int result = (int)GotoURL(m_strURL, SW_SHOW);
	  m_bVisited = (result > HINSTANCE_ERROR);
	  if (!m_bVisited) {
	  MessageBeep(MB_ICONEXCLAMATION);     // Unable to follow link
	  ReportError(result);
	  } else
	  SetVisited();*/                        // Repaint to show visited colour
}

HBRUSH CHyperLink::CtlColor(CDC* pDC, UINT nCtlColor)
{
	ASSERT(nCtlColor == CTLCOLOR_STATIC);

	if (m_bOverControl)
		pDC->SetTextColor(m_crHoverColour);
	//  else if (m_bVisited)
	// pDC->SetTextColor(m_crVisitedColour);
	else
		pDC->SetTextColor(m_crLinkColour);
	// transparent text.
	if (m_bBlackBk)
		pDC->SetBkColor(RGB(0, 0, 0));
	else
		pDC->SetBkMode(TRANSPARENT);
	return (HBRUSH)GetStockObject(NULL_BRUSH);
}

void CHyperLink::OnMouseMove(UINT nFlags, CPoint point)
{
	CStatic::OnMouseMove(nFlags, point);
	if (m_bDisable)return;
	if (m_bOverControl)        // Cursor is currently over control
	{
		CRect rect;
		GetClientRect(rect);
		if (!rect.PtInRect(point))
		{
			m_bOverControl = FALSE;
			ReleaseCapture();
			RedrawWindow();
			return;
		}
	}
	else                      // Cursor has just moved over control
	{
		m_bOverControl = TRUE;
		RedrawWindow();
		SetCapture();
	}
}

BOOL CHyperLink::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/)
{
	if (m_bDisable)return false;
	if (m_hLinkCursor)
	{
		::SetCursor(m_hLinkCursor);
		return TRUE;
	}
	return FALSE;
}

void CHyperLink::PreSubclassWindow()
{
	// We want to get mouse clicks via STN_CLICKED
	DWORD dwStyle = GetStyle();
	::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY);
	CStatic::PreSubclassWindow();
}

/////////////////////////////////////////////////////////////////////////////
// CHyperLink operations

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

	if (::IsWindow(GetSafeHwnd())) {
		PositionWindow();
		//   m_ToolTip.UpdateTipText(strURL, this, TOOLTIP_ID);
	}
}

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

void CHyperLink::SetColours(COLORREF crLinkColour, COLORREF crVisitedColour,
	COLORREF crHoverColour /* = -1 */)
{
	m_crLinkColour = crLinkColour;
	m_crVisitedColour = crVisitedColour;

	if (crHoverColour == -1)
		m_crHoverColour = ::GetSysColor(COLOR_HIGHLIGHT);
	else
		m_crHoverColour = crHoverColour;

	if (::IsWindow(m_hWnd))
		Invalidate();
}

COLORREF CHyperLink::GetLinkColour() const
{
	return m_crLinkColour;
}

COLORREF CHyperLink::GetVisitedColour() const
{
	return m_crVisitedColour;
}

COLORREF CHyperLink::GetHoverColour() const
{
	return m_crHoverColour;
}

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

	 if (::IsWindow(GetSafeHwnd()))
	 Invalidate(); */
}

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

void CHyperLink::SetLinkCursor(HCURSOR hCursor)
{
	m_hLinkCursor = hCursor;
	if (m_hLinkCursor == NULL)
		SetDefaultCursor();
}

HCURSOR CHyperLink::GetLinkCursor() const
{
	return m_hLinkCursor;
}

void CHyperLink::SetUnderline(BOOL bUnderline /* = TRUE */)
{
	m_bUnderline = bUnderline;

	if (::IsWindow(GetSafeHwnd()))
	{
		LOGFONT lf;
		GetFont()->GetLogFont(&lf);
		lf.lfUnderline = m_bUnderline;

		m_Font.DeleteObject();
		m_Font.CreateFontIndirect(&lf);
		SetFont(&m_Font);

		Invalidate();
	}
}

BOOL CHyperLink::GetUnderline() const
{
	return m_bUnderline;
}

void CHyperLink::SetAutoSize(BOOL bAutoSize /* = TRUE */)
{
	m_bAdjustToFit = bAutoSize;

	if (::IsWindow(GetSafeHwnd()))
		PositionWindow();
}

BOOL CHyperLink::GetAutoSize() const
{
	return m_bAdjustToFit;
}

// Move and resize the window so that the window is the same size
// as the hyperlink text. This stops the hyperlink cursor being active
// when it is not directly over the text. If the text is left justified
// then the window is merely shrunk, but if it is centred or right
// justified then the window will have to be moved as well.
//
// Suggested by Pål K. Tønder 

void CHyperLink::PositionWindow()
{
	if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit)
		return;

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

	CWnd* pParent = GetParent();
	if (pParent)
		pParent->ScreenToClient(rect);

	// Get the size of the 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 via the window style
	DWORD dwStyle = GetStyle();

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

	if (dwStyle & SS_CENTER)
		rect.DeflateRect((rect.Width() - Extent.cx) / 2, 0);
	else if (dwStyle & SS_RIGHT)
		rect.left = rect.right - Extent.cx;
	else // SS_LEFT = 0, so we can't test for it explicitly 
		rect.right = rect.left + Extent.cx;

	// Move the window
	SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOZORDER);
}

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

// The following appeared in Paul DiLascia's Jan 1998 MSJ articles.
// It loads a "hand" cursor from the winhlp32.exe module
extern HCURSOR g_cursorhand;
void CHyperLink::SetDefaultCursor()
{
	m_hLinkCursor = g_cursorhand; return;
	if (m_hLinkCursor == NULL)                // No cursor handle - load our own
	{
		// Get the windows directory
		CString strWndDir;
		GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH);
		strWndDir.ReleaseBuffer();

		strWndDir += _T("\\winhlp32.exe");
		// This retrieves cursor #106 from winhlp32.exe, which is a hand pointer
		HMODULE hModule = LoadLibrary(strWndDir);
		if (hModule) {
			HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106));
			if (hHandCursor)
				m_hLinkCursor = CopyCursor(hHandCursor);
		}
		FreeLibrary(hModule);
	}
}

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);
#if JEFF_TEST_ON
		StringCchCopy(retdata,MAX_PATH,data);
#else
		lstrcpy(retdata, data);
#endif
		RegCloseKey(hkey);
	}

	return retval;
}

void CHyperLink::ReportError(int nError)
{
	/*  CString str;
	  switch (nError) {
	  case 0:                       str = "The operating system is out\nof memory or resources."; break;
	  case SE_ERR_PNF:              str = "The specified path was not found."; break;
	  case SE_ERR_FNF:              str = "The specified file was not found."; break;
	  case ERROR_BAD_FORMAT:        str = "The .EXE file is invalid\n(non-Win32 .EXE or error in .EXE image)."; break;
	  case SE_ERR_ACCESSDENIED:     str = "The operating system denied\naccess to the specified file."; break;
	  case SE_ERR_ASSOCINCOMPLETE:  str = "The filename association is\nincomplete or invalid."; break;
	  case SE_ERR_DDEBUSY:          str = "The DDE transaction could not\nbe completed because other DDE transactions\nwere being processed."; break;
	  case SE_ERR_DDEFAIL:          str = "The DDE transaction failed."; break;
	  case SE_ERR_DDETIMEOUT:       str = "The DDE transaction could not\nbe completed because the request timed out."; break;
	  case SE_ERR_DLLNOTFOUND:      str = "The specified dynamic-link library was not found."; break;
	  case SE_ERR_NOASSOC:          str = "There is no application associated\nwith the given filename extension."; break;
	  case SE_ERR_OOM:              str = "There was not enough memory to complete the operation."; break;
	  case SE_ERR_SHARE:            str = "A sharing violation occurred. ";
	  default:                      str.Format("Unknown Error (%d) occurred.", nError); break;
	  }
	  str = "Unable to open hyperlink:\n\n" + str;
	  AfxMessageBox(str, MB_ICONEXCLAMATION | MB_OK);*/
}

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 0;
}

int CHyperLink::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CStatic::OnCreate(lpCreateStruct) == -1)
		return -1;

	// TODO: Add your specialized creation code here
	// Set the URL as the window text
	if (m_strURL.IsEmpty())
		GetWindowText(m_strURL);

	// Check that the window text isn't empty. If it is, set it as the URL.


	// Create the font
	m_Font.CreatePointFont(m_fontsize, "ºÚÌå", NULL);
	SetFont(&m_Font);

	PositionWindow();        // Adjust size of window to fit URL if necessary
	SetDefaultCursor();      // Try and load up a "hand" cursor

	// Create the tooltip
	/*   CRect rect;
	   GetClientRect(rect);
	   m_ToolTip.Create(this);
	   m_ToolTip.AddTool(this, m_strURL, rect, TOOLTIP_ID);*/
	return 0;
}