//////////////////////////////////////////////////////////////////////////// // TitleTip.cpp : implementation file // // Code taken from www.codeguru.com. - thanks Zafir! // // Modifed 10 Apr 1999 Now accepts a LOGFONT pointer and // a tracking rect in Show(...) (Chris Maunder) // 18 Apr 1999 Resource leak in Show fixed by Daniel Gehriger #include "stdafx.h" #include "gridctrl.h" #ifndef GRIDCONTROL_NO_TITLETIPS #include "TitleTip.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CTitleTip CTitleTip::CTitleTip() { // Register the window class if it has not already been registered. WNDCLASS wndcls; HINSTANCE hInst = AfxGetInstanceHandle(); if(!(::GetClassInfo(hInst, TITLETIP_CLASSNAME, &wndcls))) { // otherwise we need to register a new class wndcls.style = CS_SAVEBITS; wndcls.lpfnWndProc = ::DefWindowProc; wndcls.cbClsExtra = wndcls.cbWndExtra = 0; wndcls.hInstance = hInst; wndcls.hIcon = NULL; wndcls.hCursor = LoadCursor( hInst, IDC_ARROW ); wndcls.hbrBackground = (HBRUSH)(COLOR_INFOBK + 1); wndcls.lpszMenuName = NULL; wndcls.lpszClassName = TITLETIP_CLASSNAME; if (!AfxRegisterClass(&wndcls)) AfxThrowResourceException(); } } CTitleTip::~CTitleTip() { } BEGIN_MESSAGE_MAP(CTitleTip, CWnd) //{{AFX_MSG_MAP(CTitleTip) ON_WM_MOUSEMOVE() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CTitleTip message handlers BOOL CTitleTip::Create(CWnd * pParentWnd) { ASSERT_VALID(pParentWnd); DWORD dwStyle = WS_BORDER | WS_POPUP; DWORD dwExStyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST; m_pParentWnd = pParentWnd; return CreateEx(dwExStyle, TITLETIP_CLASSNAME, NULL, dwStyle, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL ); } // Show - Show the titletip if needed // rectTitle - The rectangle within which the original // title is constrained - in client coordinates // lpszTitleText - The text to be displayed // xoffset - Number of pixel that the text is offset from // left border of the cell void CTitleTip::Show(CRect rectTitle, LPCTSTR lpszTitleText, int xoffset /*=0*/, LPRECT lpHoverRect /*=NULL*/, LPLOGFONT lpLogFont /*=NULL*/) { ASSERT( ::IsWindow( GetSafeHwnd() ) ); if (rectTitle.IsRectEmpty()) return; m_rectHover = (lpHoverRect != NULL)? lpHoverRect : rectTitle; m_pParentWnd->ClientToScreen( m_rectHover ); ScreenToClient( m_rectHover ); // If titletip is already displayed, don't do anything. if( IsWindowVisible() ) return; // Do not display the titletip is app does not have focus if( GetFocus() == NULL ) return; // Define the rectangle outside which the titletip will be hidden. // We add a buffer of one pixel around the rectangle m_rectTitle.top = -1; m_rectTitle.left = -xoffset-1; m_rectTitle.right = rectTitle.Width()-xoffset; m_rectTitle.bottom = rectTitle.Height()+1; // Determine the width of the text m_pParentWnd->ClientToScreen( rectTitle ); CClientDC dc(this); CString strTitle = _T(""); strTitle += _T(" "); strTitle += lpszTitleText; strTitle += _T(" "); CFont font, *pOldFont = NULL; if (lpLogFont) { font.CreateFontIndirect(lpLogFont); pOldFont = dc.SelectObject( &font ); } else { // use same font as ctrl pOldFont = dc.SelectObject( m_pParentWnd->GetFont() ); } CSize size = dc.GetTextExtent( strTitle ); TEXTMETRIC tm; dc.GetTextMetrics(&tm); size.cx += tm.tmOverhang; CRect rectDisplay = rectTitle; rectDisplay.left += xoffset; rectDisplay.right = rectDisplay.left + size.cx + xoffset; // Do not display if the text fits within available space if( rectDisplay.right > rectTitle.right-xoffset ) { // Show the titletip SetWindowPos( &wndTop, rectDisplay.left, rectDisplay.top, rectDisplay.Width(), rectDisplay.Height(), SWP_SHOWWINDOW|SWP_NOACTIVATE ); dc.SetBkMode( TRANSPARENT ); dc.TextOut( 0, 0, strTitle ); SetCapture(); } dc.SelectObject( pOldFont ); } void CTitleTip::Hide() { if (!::IsWindow(GetSafeHwnd())) return; if (GetCapture()->GetSafeHwnd() == GetSafeHwnd()) ReleaseCapture(); ShowWindow( SW_HIDE ); } void CTitleTip::OnMouseMove(UINT nFlags, CPoint point) { if (!m_rectHover.PtInRect(point)) { Hide(); // Forward the message ClientToScreen( &point ); CWnd *pWnd = WindowFromPoint( point ); if ( pWnd == this ) pWnd = m_pParentWnd; int hittest = (int)pWnd->SendMessage(WM_NCHITTEST,0,MAKELONG(point.x,point.y)); if (hittest == HTCLIENT) { pWnd->ScreenToClient( &point ); pWnd->PostMessage( WM_MOUSEMOVE, nFlags, MAKELONG(point.x,point.y) ); } else { pWnd->PostMessage( WM_NCMOUSEMOVE, hittest, MAKELONG(point.x,point.y) ); } } } BOOL CTitleTip::PreTranslateMessage(MSG* pMsg) { CWnd *pWnd; int hittest; switch (pMsg->message) { case WM_LBUTTONDOWN: case WM_RBUTTONDOWN: case WM_MBUTTONDOWN: POINTS pts = MAKEPOINTS( pMsg->lParam ); POINT point; point.x = pts.x; point.y = pts.y; ClientToScreen( &point ); pWnd = WindowFromPoint( point ); if( pWnd == this ) pWnd = m_pParentWnd; hittest = (int)pWnd->SendMessage(WM_NCHITTEST,0,MAKELONG(point.x,point.y)); if (hittest == HTCLIENT) { pWnd->ScreenToClient( &point ); pMsg->lParam = MAKELONG(point.x,point.y); } else { switch (pMsg->message) { case WM_LBUTTONDOWN: pMsg->message = WM_NCLBUTTONDOWN; break; case WM_RBUTTONDOWN: pMsg->message = WM_NCRBUTTONDOWN; break; case WM_MBUTTONDOWN: pMsg->message = WM_NCMBUTTONDOWN; break; } pMsg->wParam = hittest; pMsg->lParam = MAKELONG(point.x,point.y); } Hide(); pWnd->PostMessage(pMsg->message,pMsg->wParam,pMsg->lParam); return TRUE; case WM_KEYDOWN: case WM_SYSKEYDOWN: Hide(); m_pParentWnd->PostMessage( pMsg->message, pMsg->wParam, pMsg->lParam ); return TRUE; } if( GetFocus() == NULL ) { Hide(); return TRUE; } return CWnd::PreTranslateMessage(pMsg); } #endif // GRIDCONTROL_NO_TITLETIPS