tools/relic/test/BrowserToolTip.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: Mozilla-sample-code 1.0
   3  *
   4  * Copyright (c) 2002 Netscape Communications Corporation and
   5  * other contributors
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this Mozilla sample software and associated documentation files
   9  * (the "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sublicense, and/or sell copies of the Software, and to permit
  12  * persons to whom the Software is furnished to do so, subject to the
  13  * following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  * Contributor(s):
  27  *   Adam Lock <adamlock@netscape.com>
  28  *
  29  * ***** END LICENSE BLOCK ***** */
  30
  31 #include "stdafx.h"
  32
  33 #include "BrowserToolTip.h"
  34
  35 #ifdef _DEBUG
  36 #define new DEBUG_NEW
  37 #undef THIS_FILE
  38 static char THIS_FILE[] = __FILE__;
  39 #endif
  40
  41 /////////////////////////////////////////////////////////////////////////////
  42 // CBrowserToolTip
  43
  44 CBrowserToolTip::CBrowserToolTip()
  45 {
  46 }
  47
  48 CBrowserToolTip::~CBrowserToolTip()
  49 {
  50 }
  51
  52 BEGIN_MESSAGE_MAP(CBrowserToolTip, CWnd)
  53         //{{AFX_MSG_MAP(CBrowserToolTip)
  54         ON_WM_PAINT()
  55         //}}AFX_MSG_MAP
  56 END_MESSAGE_MAP()
  57
  58
  59 BOOL CBrowserToolTip::Create(CWnd *pParentWnd)
  60 {
  61     return CWnd::CreateEx(WS_EX_TOOLWINDOW,
  62         AfxRegisterWndClass(CS_SAVEBITS, NULL, GetSysColorBrush(COLOR_INFOBK), NULL),
  63         _T("ToolTip"), WS_POPUP | WS_BORDER, 0, 0, 1, 1, pParentWnd->GetSafeHwnd(), NULL);
  64 }
  65
  66 /////////////////////////////////////////////////////////////////////////////
  67 // CBrowserToolTip message handlers
  68
  69 void CBrowserToolTip::OnPaint()
  70 {
  71         CPaintDC dc(this); // device context for painting
  72
  73     CRect rcClient;
  74     GetClientRect(&rcClient);
  75
  76     // Draw tip text
  77     int oldBkMode = dc.SetBkMode(TRANSPARENT);
  78     COLORREF oldTextColor = dc.SetTextColor(GetSysColor(COLOR_INFOTEXT));
  79     HGDIOBJ oldFont = dc.SelectObject(GetStockObject(DEFAULT_GUI_FONT));
  80
  81     dc.DrawText(m_szTipText, -1, rcClient, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
  82
  83     dc.SetBkMode(oldBkMode);
  84     dc.SetTextColor(oldTextColor);
  85     dc.SelectObject(oldFont);
  86 }
  87
  88 BOOL CBrowserToolTip::PreCreateWindow(CREATESTRUCT& cs)
  89 {
  90         return CWnd::PreCreateWindow(cs);
  91 }
  92
  93 void CBrowserToolTip::SetTipText(const CString &szTipText)
  94 {
  95     m_szTipText = szTipText;
  96 }
  97
  98 void CBrowserToolTip::Show(CWnd *pOverWnd, long left, long top)
  99 {
 100     // Calculate the client window size
 101     CRect rcNewClient(0,0,0,0);
 102     CDC *pdc = GetDC();
 103     HGDIOBJ oldFont = pdc->SelectObject(GetStockObject(DEFAULT_GUI_FONT));
 104     rcNewClient.bottom = pdc->DrawText(m_szTipText, -1, rcNewClient,
 105         DT_SINGLELINE | DT_VCENTER | DT_CENTER | DT_CALCRECT);
 106     pdc->SelectObject(oldFont);
 107     ReleaseDC(pdc);
 108     rcNewClient.right += 8;
 109     rcNewClient.bottom += 8;
 110
 111     // Adjust the tooltip to new size
 112     AdjustWindowRectEx(rcNewClient, GetWindowLong(m_hWnd, GWL_STYLE), FALSE, GetWindowLong(m_hWnd, GWL_EXSTYLE));
 113
 114     // Adjust the left, top position of the tooltip
 115     CPoint ptTip(left, top);
 116     pOverWnd->ClientToScreen(&ptTip);
 117
 118     // Make sure tip is below cursor
 119     POINT ptCursor;
 120     GetCursorPos(&ptCursor);
 121     long cyCursor = GetSystemMetrics(SM_CYCURSOR);
 122     if (ptTip.y < ptCursor.y + cyCursor)
 123         ptTip.y = ptCursor.y + cyCursor;
 124
 125     // Make sure tip is fully visible
 126     RECT rcScreen;
 127     GetDesktopWindow()->GetClientRect(&rcScreen);
 128     if (ptTip.x < 0)
 129         ptTip.x = 0;
 130     else if (ptTip.x + rcNewClient.Width() > rcScreen.right)
 131         ptTip.x = rcScreen.right - rcNewClient.Width();
 132     if (ptTip.y < 0)
 133         ptTip.y = 0;
 134     else if (ptTip.y + rcNewClient.Height() > rcScreen.bottom)
 135         ptTip.y = rcScreen.bottom - rcNewClient.Height();
 136
 137     // Position and show the tip
 138     SetWindowPos(&CWnd::wndTop, ptTip.x, ptTip.y, rcNewClient.Width(), rcNewClient.Height(),
 139         SWP_NOACTIVATE | SWP_SHOWWINDOW);
 140 }
 141
 142 void CBrowserToolTip::Hide()
 143 {
 144     ShowWindow(SW_HIDE);
 145 }