ctooltipwnd.cpp

实现简单的日记本的程序

// ToolTipWnd.cpp : implementation file
//

#include "stdafx.h"
#include "CToolTipWnd.h"

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

/////////////////////////////////////////////////////////////////////////////
// CToolTipWnd

CToolTipWnd::CToolTipWnd()
{

     lpWndCls      = AfxRegisterWndClass(0);
    
     //Defaults
     m_bMouseIn      = false;
     m_bStuck      = false;
    
     m_iWidth = 100;
     m_iHeight = 60;

     m_clrBkColor = RGB(249,254,188); //light yellow
     m_clrFrameColor = RGB(0,0,255); //blue
     m_clrTextColor = RGB(0,0,0);       //black

     m_iFontHeight = 14;
     m_strFontName = "Arial";

     pCurrwnd = NULL;
}

CToolTipWnd::~CToolTipWnd()
{

     BTOOLINFO *stToolInfo;
     CWnd *pWnd;
     for(POSITION pos = m_ToolPtr.GetStartPosition(); pos != NULL;)
     {
           m_ToolPtr.GetNextAssoc(pos, (void *&)pWnd, (void*&) stToolInfo);
           delete stToolInfo;
     }
     m_ToolPtr.RemoveAll();

}


BEGIN_MESSAGE_MAP(CToolTipWnd, CWnd)
     //{{AFX_MSG_MAP(CToolTipWnd)
     ON_WM_PAINT()
     ON_WM_CREATE()
     //}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CToolTipWnd message handlers
BOOL CToolTipWnd::Create(CWnd* pParentWnd)
{

     BOOL bRet = CWnd::CreateEx(NULL, lpWndCls, NULL,
           WS_POPUP, 0, 0, m_iWidth, m_iHeight,
           pParentWnd->GetSafeHwnd(), NULL, NULL);

     m_hParentWnd = pParentWnd->GetSafeHwnd();
    
     if(bRet)
           SetOwner(pParentWnd);

     return bRet;

}

void CToolTipWnd::OnPaint()
{
     CPaintDC dc(this); // device context for painting
    
     CRect rectCl;
     GetClientRect(&rectCl);

     CRgn rgnComb;     
     rgnComb.CreateRectRgn(rectCl.left+10,rectCl.top,rectCl.right,rectCl.bottom);

     int iRetComb = rgnComb.CombineRgn(&rgnTri, &rgn, RGN_OR);
     if(iRetComb==ERROR)
     {
           AfxMessageBox("ERROR in Combining Region");
           return;
     }

     CBrush pBrush;
     pBrush.CreateSolidBrush(m_clrFrameColor);
    
     CBrush pBrush1;
     pBrush1.CreateSolidBrush(m_clrBkColor);
    
     dc.FillRgn( &rgnComb, &pBrush1);
     dc.FrameRgn(&rgnComb, &pBrush, 2, 1);

     dc.SetBkMode(TRANSPARENT);
     dc.SetTextColor(m_clrTextColor);
    
     CFont *pFont = dc.SelectObject(&m_fontText);
     //dc.Rectangle(&m_RectText);

     CSize czTextWidth = dc.GetTextExtent(m_strText);
    
     if( czTextWidth.cx < m_RectText.Width())
           dc.DrawText(m_strText, m_RectText, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
     else
           dc.DrawText(m_strText, m_RectText, DT_CENTER | DT_WORDBREAK);
    
    

     dc.SelectObject(pFont);
    
}


int CToolTipWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
     if (CWnd::OnCreate(lpCreateStruct) == -1)
           return -1;
    
     CRect rectCl;
     GetClientRect(&rectCl);

     int x=0, y=0;
     CRect rectTemp;

     rectTemp = rectCl;
     rectTemp.left = rectTemp.left + 10;
    
     x = (int)( (float)((float)rectTemp.Width() / 2.0) / 1.41421);
     y = (int)( (float)((float)rectTemp.Height() / 2.0) / 1.41421);

     m_RectText.top = ( (rectTemp.Height() / 2) - y);
     m_RectText.left = ( (rectTemp.Width() / 2) - x) + 10;
     m_RectText.right = ( (rectTemp.Width() / 2) + x) + 10;
     m_RectText.bottom = ( (rectTemp.Height() / 2) + y);

     rgn.m_hObject = NULL;
     rgnTri.m_hObject = NULL;
     rgnComb.m_hObject = NULL;

     BOOL bRegRet = rgn.CreateEllipticRgn(rectCl.left+10,rectCl.top,rectCl.right,rectCl.bottom);
          
     CPoint ptTri[3];
     ptTri[0].x = rectCl.left;
     ptTri[0].y = (rectCl.bottom / 2) - 10;

     ptTri[1].x = rectCl.left + 15;
     ptTri[1].y = (rectCl.bottom / 2) - 5;

     ptTri[2].x = rectCl.left + 15;
     ptTri[2].y = (rectCl.bottom / 2) + 5;
    
     ptTri[3].x = rectCl.left;
     ptTri[3].y = (rectCl.bottom / 2) - 10;

     BOOL bRegTriRet = rgnTri.CreatePolygonRgn(ptTri, 3, ALTERNATE);

     rgnComb.CreateRectRgn(rectCl.left+10,rectCl.top,rectCl.right,rectCl.bottom);
     int iRetComb = rgnComb.CombineRgn(&rgnTri, &rgn, RGN_OR);

     if(iRetComb == ERROR)
     {
           AfxMessageBox("ERROR in Combining Region");
           return -1;
     }

     int bRgnWnd = SetWindowRgn(rgnComb.operator HRGN( ), TRUE);     

     m_fontText.CreateFont(m_iFontHeight, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,m_strFontName);     
    
     return 0;
}

void CToolTipWnd::RelayEvent(LPMSG lpMsg)
{

     switch(lpMsg->message)
     {
     case WM_KEYDOWN:
                 if(IsWindowVisible())
                 {           
                       ShowWindow(SW_HIDE);
                 }
                 break;

     case WM_LBUTTONDOWN:
     case WM_RBUTTONDOWN:
                 if(IsWindowVisible())
                 {
                       ShowWindow(SW_HIDE);
                 }
                 break;

     case WM_MOUSEMOVE:
           {
                 CWnd *pFocusWnd = AfxGetApp()->m_pMainWnd->GetFocus();
                 if(pFocusWnd==NULL)
                       break;
                 CWnd* pWnd = CWnd::FromHandle(lpMsg->hwnd);

                 HWND hWndTemp = ::GetParent(lpMsg->hwnd);
                
                 CPoint pt;
                 pt.x = lpMsg->pt.x;
                 pt.y = lpMsg->pt.y;
                
                 BTOOLINFO *stToolInfo;
                 CWnd *pBToolWnd;
                
                 for(POSITION pos = m_ToolPtr.GetStartPosition(); pos != NULL;)
                 {
                       m_ToolPtr.GetNextAssoc(pos, (void *&)pBToolWnd, (void*&) stToolInfo);
                      
                       if(!m_bMouseIn)
                       {
                             if(lpMsg->hwnd == stToolInfo->hwndTool)
                             {
                            
                                   if(m_bStuck && IsWindowVisible())
                                   {
                                         SetWindowPos(&wndTop,pt.x,pt.y,m_iWidth,m_iHeight,SWP_NOACTIVATE);
                                         ShowWindow(SW_SHOWNOACTIVATE);
                                   }

                                   m_bMouseIn = true;
                                   m_clrTextColor = stToolInfo->clrToolTextClr;
                                   m_strText = stToolInfo->strToolText;
                                  
                                   SetWindowPos(&wndTop,pt.x,pt.y,m_iWidth,m_iHeight,SWP_NOACTIVATE);
                                   ShowWindow(SW_SHOWNOACTIVATE);
                                  
                                   pCurrwnd = stToolInfo->hwndTool;

                                   break;
                             }
                       }
                       else
                       {
                             CRect rect;
                             ::GetWindowRect(pCurrwnd, &rect);
                             if(m_bStuck && IsWindowVisible())
                             {
                                   SetWindowPos(&wndTop,pt.x,pt.y,m_iWidth,m_iHeight,SWP_NOACTIVATE);
                                   ShowWindow(SW_SHOWNOACTIVATE);
                             }
                            
                            
                             CWnd* pWnd = CWnd::FromHandle(lpMsg->hwnd);
                             CWnd *WndPt = pWnd->WindowFromPoint(lpMsg->pt);
                             if(WndPt->GetSafeHwnd() != pCurrwnd)
                             {
                                   m_bMouseIn = false;
                                   ShowWindow(SW_HIDE);
                             }
                            

                             break;
                       }
                 }
                
           }     
           break; //WM_MOUSEMOVE
     }
     
}

void CToolTipWnd::AddTool(CWnd *pWnd, CString strText, COLORREF clrTextColor)
{

     BTOOLINFO *stToolInfo;

     if(!m_ToolPtr.Lookup( pWnd, ( void*& ) stToolInfo))
     {
           stToolInfo = new BTOOLINFO;
           stToolInfo->hwndTool = pWnd->GetSafeHwnd();
           stToolInfo->strToolText = strText;
           if(clrTextColor==NULL)
                 stToolInfo->clrToolTextClr = m_clrTextColor;
           else
                 stToolInfo->clrToolTextClr = clrTextColor;
    
           m_ToolPtr.SetAt(pWnd, stToolInfo);
     }

}