// LabelLink.cpp : implementation file
//
// LabelLink static control.
//

#include "stdafx.h"
#include "LabelLink.h"

#include "windows.h"

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

/////////////////////////////////////////////////////////////////////////////
// CLabelLink

HCURSOR CLabelLink::g_hLinkCursor = NULL;

CLabelLink::CLabelLink()
{
   m_bOverControl = FALSE;    // Cursor not yet over control
   m_strURL.Empty();          // Set URL to an empty string
}

CLabelLink::~CLabelLink()
{
}

IMPLEMENT_DYNAMIC(CLabelLink, CStatic)

BEGIN_MESSAGE_MAP(CLabelLink, CStatic)
   //{{AFX_MSG_MAP(CLabelLink)
   ON_WM_CTLCOLOR_REFLECT()
   ON_WM_SETCURSOR()
   ON_WM_MOUSEMOVE()
   ON_WM_LBUTTONUP()
   ON_WM_NCHITTEST()
   //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLabelLink message handlers

void CLabelLink::PreSubclassWindow()
{
   // If the URL string is empty try to set it to the window text
   if (m_strURL.IsEmpty())
      GetWindowText(m_strURL);

   // Check that the window text isn't empty.
   // If it is, set it as URL string.
   CString strWndText;
   GetWindowText(strWndText);
   if (strWndText.IsEmpty())
      CStatic::SetWindowText(m_strURL);

   CString strWndDir;
   GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH);
   strWndDir.ReleaseBuffer();

   strWndDir += TEXT("\\winhlp32.exe");
   HMODULE hModule = LoadLibrary(strWndDir);

   g_hLinkCursor = LoadCursor(hModule, MAKEINTRESOURCE(106));
   FreeLibrary(hModule);

   CStatic::PreSubclassWindow();
}

HBRUSH CLabelLink::CtlColor(CDC* pDC, UINT nCtlColor)
{
   pDC->SetTextColor(RGB(0, 0, 255));

   // Set transparent drawing mode
   pDC->SetBkMode(TRANSPARENT);
   return (HBRUSH)GetStockObject(NULL_BRUSH);
}

void CLabelLink::OnMouseMove(UINT nFlags, CPoint point) 
{
   if (m_bOverControl)        // Cursor currently over control
   {
      CRect rect;
      GetClientRect(rect);

      if (!rect.PtInRect(point))
      {
         m_bOverControl = FALSE;
         ReleaseCapture();
         Invalidate();
         return;
      }
   }
   else // Cursor has left control area
   {
      m_bOverControl = TRUE;
      Invalidate();
      SetCapture();
   }
}

//////////////////////////////////////////////////////////////////////////
UINT CLabelLink::OnNcHitTest(CPoint point)
{
   return HTCLIENT;
}

void CLabelLink::OnLButtonUp(UINT nFlags, CPoint point)
{
   ShellExecute(NULL, TEXT("open"), m_strURL, NULL, NULL, SW_SHOW);
}

BOOL CLabelLink::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
   if (g_hLinkCursor)
   {
      ::SetCursor(g_hLinkCursor);
      return TRUE;
   }
   return FALSE;
}