gecko-dev/embedding/tests/mfcembed/BrowserToolTip.cpp

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4.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: Mozilla-sample-code 1.0
*
* Copyright (c) 2002 Netscape Communications Corporation and
* other contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this Mozilla sample software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Contributor(s):
* Adam Lock <adamlock@netscape.com>
*
* ***** END LICENSE BLOCK ***** */
#include "stdafx.h"
#include "BrowserToolTip.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CBrowserToolTip
CBrowserToolTip::CBrowserToolTip()
{
}
CBrowserToolTip::~CBrowserToolTip()
{
}
BEGIN_MESSAGE_MAP(CBrowserToolTip, CWnd)
//{{AFX_MSG_MAP(CBrowserToolTip)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
BOOL CBrowserToolTip::Create(CWnd *pParentWnd)
{
return CWnd::CreateEx(WS_EX_TOOLWINDOW,
AfxRegisterWndClass(CS_SAVEBITS, NULL, GetSysColorBrush(COLOR_INFOBK), NULL),
_T("ToolTip"), WS_POPUP | WS_BORDER, 0, 0, 1, 1, pParentWnd->GetSafeHwnd(), NULL);
}
/////////////////////////////////////////////////////////////////////////////
// CBrowserToolTip message handlers
void CBrowserToolTip::OnPaint()
{
CPaintDC dc(this); // device context for painting
CRect rcClient;
GetClientRect(&rcClient);
// Draw tip text
int oldBkMode = dc.SetBkMode(TRANSPARENT);
COLORREF oldTextColor = dc.SetTextColor(GetSysColor(COLOR_INFOTEXT));
HGDIOBJ oldFont = dc.SelectObject(GetStockObject(DEFAULT_GUI_FONT));
dc.DrawText(m_szTipText, -1, rcClient, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
dc.SetBkMode(oldBkMode);
dc.SetTextColor(oldTextColor);
dc.SelectObject(oldFont);
}
BOOL CBrowserToolTip::PreCreateWindow(CREATESTRUCT& cs)
{
return CWnd::PreCreateWindow(cs);
}
void CBrowserToolTip::SetTipText(const CString &szTipText)
{
m_szTipText = szTipText;
}
void CBrowserToolTip::Show(CWnd *pOverWnd, long left, long top)
{
// Calculate the client window size
CRect rcNewClient(0,0,0,0);
CDC *pdc = GetDC();
HGDIOBJ oldFont = pdc->SelectObject(GetStockObject(DEFAULT_GUI_FONT));
rcNewClient.bottom = pdc->DrawText(m_szTipText, -1, rcNewClient,
DT_SINGLELINE | DT_VCENTER | DT_CENTER | DT_CALCRECT);
pdc->SelectObject(oldFont);
ReleaseDC(pdc);
rcNewClient.right += 8;
rcNewClient.bottom += 8;
// Adjust the tooltip to new size
AdjustWindowRectEx(rcNewClient, GetWindowLong(m_hWnd, GWL_STYLE), FALSE, GetWindowLong(m_hWnd, GWL_EXSTYLE));
// Adjust the left, top position of the tooltip
CPoint ptTip(left, top);
pOverWnd->ClientToScreen(&ptTip);
// Make sure tip is below cursor
POINT ptCursor;
GetCursorPos(&ptCursor);
long cyCursor = GetSystemMetrics(SM_CYCURSOR);
if (ptTip.y < ptCursor.y + cyCursor)
ptTip.y = ptCursor.y + cyCursor;
// Make sure tip is fully visible
RECT rcScreen;
GetDesktopWindow()->GetClientRect(&rcScreen);
if (ptTip.x < 0)
ptTip.x = 0;
else if (ptTip.x + rcNewClient.Width() > rcScreen.right)
ptTip.x = rcScreen.right - rcNewClient.Width();
if (ptTip.y < 0)
ptTip.y = 0;
else if (ptTip.y + rcNewClient.Height() > rcScreen.bottom)
ptTip.y = rcScreen.bottom - rcNewClient.Height();
// Position and show the tip
SetWindowPos(&CWnd::wndTop, ptTip.x, ptTip.y, rcNewClient.Width(), rcNewClient.Height(),
SWP_NOACTIVATE | SWP_SHOWWINDOW);
}
void CBrowserToolTip::Hide()
{
ShowWindow(SW_HIDE);
}