embedding/qa/testembed/BrowserToolTip.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is mozilla.org Code.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Netscape Communications Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 2001
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Adam Lock <adamlock@netscape.com>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
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  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #include "stdafx.h"
  39
  40 #include "BrowserToolTip.h"
  41
  42 #ifdef _DEBUG
  43 #define new DEBUG_NEW
  44 #undef THIS_FILE
  45 static char THIS_FILE[] = __FILE__;
  46 #endif
  47
  48 /////////////////////////////////////////////////////////////////////////////
  49 // CBrowserToolTip
  50
  51 CBrowserToolTip::CBrowserToolTip()
  52 {
  53 }
  54
  55 CBrowserToolTip::~CBrowserToolTip()
  56 {
  57 }
  58
  59 BEGIN_MESSAGE_MAP(CBrowserToolTip, CWnd)
  60         //{{AFX_MSG_MAP(CBrowserToolTip)
  61         ON_WM_PAINT()
  62         //}}AFX_MSG_MAP
  63 END_MESSAGE_MAP()
  64
  65
  66 BOOL CBrowserToolTip::Create(CWnd *pParentWnd)
  67 {
  68     return CWnd::CreateEx(WS_EX_TOOLWINDOW,
  69         AfxRegisterWndClass(CS_SAVEBITS, NULL, GetSysColorBrush(COLOR_INFOBK), NULL),
  70         _T("ToolTip"), WS_POPUP | WS_BORDER, 0, 0, 1, 1, pParentWnd->GetSafeHwnd(), NULL);
  71 }
  72
  73 /////////////////////////////////////////////////////////////////////////////
  74 // CBrowserToolTip message handlers
  75
  76 void CBrowserToolTip::OnPaint()
  77 {
  78         CPaintDC dc(this); // device context for painting
  79
  80     CRect rcClient;
  81     GetClientRect(&rcClient);
  82
  83     // Draw tip text
  84     int oldBkMode = dc.SetBkMode(TRANSPARENT);
  85     COLORREF oldTextColor = dc.SetTextColor(GetSysColor(COLOR_INFOTEXT));
  86     HGDIOBJ oldFont = dc.SelectObject(GetStockObject(DEFAULT_GUI_FONT));
  87
  88     dc.DrawText(m_szTipText, -1, rcClient, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
  89
  90     dc.SetBkMode(oldBkMode);
  91     dc.SetTextColor(oldTextColor);
  92     dc.SelectObject(oldFont);
  93 }
  94
  95 BOOL CBrowserToolTip::PreCreateWindow(CREATESTRUCT& cs)
  96 {
  97         return CWnd::PreCreateWindow(cs);
  98 }
  99
 100 void CBrowserToolTip::SetTipText(const CString &szTipText)
 101 {
 102     m_szTipText = szTipText;
 103 }
 104
 105 void CBrowserToolTip::Show(CWnd *pOverWnd, long left, long top)
 106 {
 107     // Calculate the client window size
 108     CRect rcNewClient(0,0,0,0);
 109     CDC *pdc = GetDC();
 110     HGDIOBJ oldFont = pdc->SelectObject(GetStockObject(DEFAULT_GUI_FONT));
 111     rcNewClient.bottom = pdc->DrawText(m_szTipText, -1, rcNewClient,
 112         DT_SINGLELINE | DT_VCENTER | DT_CENTER | DT_CALCRECT);
 113     pdc->SelectObject(oldFont);
 114     ReleaseDC(pdc);
 115     rcNewClient.right += 8;
 116     rcNewClient.bottom += 8;
 117
 118     // Adjust the tooltip to new size
 119     AdjustWindowRectEx(rcNewClient, GetWindowLong(m_hWnd, GWL_STYLE), FALSE, GetWindowLong(m_hWnd, GWL_EXSTYLE));
 120
 121     // Adjust the left, top position of the tooltip
 122     CPoint ptTip(left, top);
 123     pOverWnd->ClientToScreen(&ptTip);
 124
 125     // Make sure tip is below cursor
 126     POINT ptCursor;
 127     GetCursorPos(&ptCursor);
 128     long cyCursor = GetSystemMetrics(SM_CYCURSOR);
 129     if (ptTip.y < ptCursor.y + cyCursor)
 130         ptTip.y = ptCursor.y + cyCursor;
 131
 132     // Make sure tip is fully visible
 133     RECT rcScreen;
 134     GetDesktopWindow()->GetClientRect(&rcScreen);
 135     if (ptTip.x < 0)
 136         ptTip.x = 0;
 137     else if (ptTip.x + rcNewClient.Width() > rcScreen.right)
 138         ptTip.x = rcScreen.right - rcNewClient.Width();
 139     if (ptTip.y < 0)
 140         ptTip.y = 0;
 141     else if (ptTip.y + rcNewClient.Height() > rcScreen.bottom)
 142         ptTip.y = rcScreen.bottom - rcNewClient.Height();
 143
 144     // Position and show the tip
 145     SetWindowPos(&CWnd::wndTop, ptTip.x, ptTip.y, rcNewClient.Width(), rcNewClient.Height(),
 146         SWP_NOACTIVATE | SWP_SHOWWINDOW);
 147 }
 148
 149 void CBrowserToolTip::Hide()
 150 {
 151     ShowWindow(SW_HIDE);
 152 }