www.pudn.com > editpad_src > bcgurllinkbutton.cpp, change:1999-11-21,size:7496b

//******************************************************************************* 
// COPYRIGHT NOTES 
// --------------- 
// This source code is a part of BCGControlBar library. 
// You may use, compile or redistribute it as part of your application  
// for free. You cannot redistribute it as a part of a software development  
// library without the agreement of the author. If the sources are  
// distributed along with the application, you should leave the original  
// copyright notes in the source code without any changes. 
// This code can be used WITHOUT ANY WARRANTIES on your own risk. 
//  
// Stas Levin <stas@iet.co.il> 
//******************************************************************************* 
 
// BCGURLLinkButton.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "bcgcontrolbar.h" 
#include "BCGURLLinkButton.h" 
#include "globals.h" 
#include "bcglocalres.h" 
#include "bcgbarres.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGURLLinkButton 
 
CBCGURLLinkButton::CBCGURLLinkButton() 
{ 
	m_bHover = FALSE; 
	m_bPressed = FALSE; 
 
	//--------------------------- 
	// Initialize underline font: 
	//--------------------------- 
	CFont font; 
	font.CreateStockObject (DEFAULT_GUI_FONT); 
 
	LOGFONT lf; 
	font.GetLogFont (&lf); 
	lf.lfUnderline = TRUE; 
 
	m_fontDefault.CreateFontIndirect (&lf); 
 
	//------------------- 
	// Initialize colors: 
	//------------------- 
	m_clrRegular = ::GetSysColor (COLOR_HIGHLIGHT); 
 
#ifdef COLOR_HOTLIGHT 
 
	OSVERSIONINFO osvi; 
    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 
 
	::GetVersionEx (&osvi); 
	if (osvi.dwMajorVersion >= 5) 
	{ 
		m_clrHover = ::GetSysColor (COLOR_HOTLIGHT); 
	} 
	else 
#endif 
	{ 
		m_clrHover = RGB (255, 0, 0);	// Light red 
	} 
} 
 
CBCGURLLinkButton::~CBCGURLLinkButton() 
{ 
} 
 
BEGIN_MESSAGE_MAP(CBCGURLLinkButton, CButton) 
	//{{AFX_MSG_MAP(CBCGURLLinkButton) 
	ON_WM_SETCURSOR() 
	ON_CONTROL_REFLECT(BN_CLICKED, OnClicked) 
	ON_WM_CANCELMODE() 
	ON_WM_MOUSEMOVE() 
	ON_WM_LBUTTONDOWN() 
	ON_WM_LBUTTONUP() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGURLLinkButton message handlers 
 
void CBCGURLLinkButton::DrawItem(LPDRAWITEMSTRUCT lpDIS)  
{ 
	ASSERT (lpDIS != NULL); 
 
	CDC* pDC = CDC::FromHandle (lpDIS->hDC); 
	ASSERT_VALID (pDC); 
 
	CRect rect = lpDIS->rcItem; 
 
	// Set font: 
	CFont* pOldFont = pDC->SelectObject (&m_fontDefault); 
	ASSERT (pOldFont != NULL); 
 
	// Set text parameters: 
	pDC->SetTextColor (m_bHover ? m_clrHover : m_clrRegular); 
	pDC->SetBkMode (TRANSPARENT); 
 
	// Obtain label: 
	CString strLabel; 
	GetWindowText (strLabel); 
 
	pDC->DrawText (strLabel, rect, DT_SINGLELINE); 
 
	pDC->SelectObject (pOldFont); 
} 
//****************************************************************************************** 
BOOL CBCGURLLinkButton::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/)  
{ 
	if (globalData.m_hcurHand == NULL) 
	{ 
		CBCGLocalResource locaRes; 
		globalData.m_hcurHand = AfxGetApp ()->LoadCursor (IDC_BCGBARRES_HAND); 
	} 
 
	::SetCursor (globalData.m_hcurHand); 
	return TRUE; 
} 
//****************************************************************************************** 
void CBCGURLLinkButton::OnClicked()  
{ 
	CWaitCursor wait; 
 
	CString strURL = m_strURL; 
	if (strURL.IsEmpty ()) 
	{ 
		GetWindowText (strURL); 
	} 
 
	if (::ShellExecute (NULL, NULL, m_strPrefix + strURL, NULL, NULL, NULL)  (HINSTANCE) 32) 
	{ 
		TRACE(_T("Can't open URL: %s\n"), strURL); 
	} 
 
	Release (); 
} 
//****************************************************************************************** 
void CBCGURLLinkButton::OnCancelMode()  
{ 
	CButton::OnCancelMode(); 
 
	m_bPressed = FALSE; 
	Release (); 
} 
//****************************************************************************************** 
void CBCGURLLinkButton::OnMouseMove(UINT nFlags, CPoint point)  
{ 
	if ((nFlags & MK_LBUTTON) == 0 || m_bPressed) 
	{ 
		CRect rectClient; 
		GetClientRect (rectClient); 
 
		if (rectClient.PtInRect (point)) 
		{ 
			if (!m_bHover) 
			{ 
				m_bHover = TRUE; 
				SetCapture (); 
 
				Invalidate (); 
				UpdateWindow (); 
			} 
		} 
		else 
		{ 
			if (m_bHover) 
			{ 
				Release (); 
			} 
		} 
	} 
	 
	CButton::OnMouseMove(nFlags, point); 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::SetURL (LPCTSTR lpszURL) 
{ 
	if (lpszURL == NULL) 
	{ 
		m_strURL.Empty (); 
	} 
	else 
	{ 
		m_strURL = lpszURL; 
	} 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::SetTooltip (LPCTSTR lpszToolTip) 
{ 
	ASSERT (GetSafeHwnd () != NULL); 
 
	if (m_wndToolTip.GetSafeHwnd () == NULL) 
	{ 
		m_wndToolTip.Create (this, TTS_ALWAYSTIP); 
	} 
	else 
	{ 
		m_wndToolTip.DelTool (this); 
	} 
 
	if (lpszToolTip != NULL) 
	{ 
		m_wndToolTip.AddTool (this, lpszToolTip); 
	} 
} 
//******************************************************************************************* 
BOOL CBCGURLLinkButton::PreTranslateMessage(MSG* pMsg)  
{ 
	if (m_wndToolTip.GetSafeHwnd () != NULL) 
	{ 
		m_wndToolTip.RelayEvent (pMsg); 
	} 
	 
	return CButton::PreTranslateMessage(pMsg); 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::Release () 
{ 
	m_bHover = FALSE; 
	::ReleaseCapture (); 
 
	Invalidate (); 
	UpdateWindow (); 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::SetURLPrefix (LPCTSTR lpszPrefix) 
{ 
	ASSERT (lpszPrefix != NULL); 
	m_strPrefix = lpszPrefix; 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::SizeToContent (BOOL bVCenter, BOOL bHCenter) 
{ 
	ASSERT_VALID (this); 
	ASSERT (GetSafeHwnd () != NULL); 
 
	CClientDC dc (this); 
 
	// Set font: 
	CFont* pOldFont = dc.SelectObject (&m_fontDefault); 
	ASSERT (pOldFont != NULL); 
 
	// Obtain label: 
	CString strLabel; 
	GetWindowText (strLabel); 
 
	CRect rectClient; 
	GetClientRect (rectClient); 
 
	CRect rectText = rectClient; 
	dc.DrawText (strLabel, rectText, DT_SINGLELINE | DT_CALCRECT); 
 
	if (bVCenter || bHCenter) 
	{ 
		ASSERT (GetParent ()->GetSafeHwnd () != NULL); 
		MapWindowPoints (GetParent (), rectClient); 
 
		int dx = bHCenter ? (rectClient.Width () - rectText.Width ()) / 2 : 0; 
		int dy = bVCenter ? (rectClient.Height () - rectText.Height ()) / 2 : 0; 
 
		SetWindowPos (NULL, rectClient.left + dx, rectClient.top + dy,  
			rectText.Width (), rectText.Height (), 
			SWP_NOZORDER | SWP_NOACTIVATE); 
	} 
	else 
	{ 
		SetWindowPos (NULL, -1, -1, rectText.Width (), rectText.Height (), 
			SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE); 
	} 
 
	dc.SelectObject (pOldFont); 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::OnLButtonDown(UINT nFlags, CPoint point)  
{ 
	m_bPressed = TRUE; 
	CButton::OnLButtonDown(nFlags, point); 
} 
//******************************************************************************************* 
void CBCGURLLinkButton::OnLButtonUp(UINT nFlags, CPoint point)  
{ 
	m_bPressed = FALSE; 
	CButton::OnLButtonUp(nFlags, point); 
}