www.pudn.com > tetris.zip > ROUNDBMPBUTTON.CPP

///////////////////////////////////////////////////////////////////////////// 
// Copyright (C) 1998 by Jörg König 
// All rights reserved 
// 
// This file is part of the completely free tetris clone "CGTetris". 
// 
// This is free software. 
// You may redistribute it by any means providing it is not sold for profit 
// without the authors written consent. 
// 
// No warrantee of any kind, expressed or implied, is included with this 
// software; use at your own risk, responsibility for damages (if any) to 
// anyone resulting from the use of this software rests entirely with the 
// user. 
// 
// Send bug reports, bug fixes, enhancements, requests, flames, etc., and 
// I'll try to keep a version up to date.  I can be reached as follows: 
//    J.Koenig@adg.de                 (company site) 
//    Joerg.Koenig@rhein-neckar.de    (private site) 
///////////////////////////////////////////////////////////////////////////// 
 
 
// RoundBmpButton.cpp: implementation of the CRoundBitmapButton class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "tetris.h" 
#include "RoundBmpButton.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
 
BEGIN_MESSAGE_MAP(CRoundBitmapButton, CRoundButton) 
	//{{AFX_MSG_MAP(CRoundBitmapButton) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
 
CRoundBitmapButton::CRoundBitmapButton() 
	: m_hIcon(0) 
{ 
 
} 
 
CRoundBitmapButton::~CRoundBitmapButton() 
{ 
 
} 
 
 
BOOL CRoundBitmapButton::SetIcon(LPCTSTR pszResource, const CSize & size) { 
	m_hIcon = ::LoadIcon(HINSTANCE(GetModuleHandle(0)), pszResource); 
	if( m_hIcon ) { 
		SetWindowText(TEXT("")); 
		if( size == CSize(0,0) ) 
			m_SizeIcon = CSize(::GetSystemMetrics(SM_CXICON), ::GetSystemMetrics(SM_CYICON)); 
		else 
			m_SizeIcon = size; 
	} 
	return m_hIcon ? TRUE : FALSE; 
} 
 
void CRoundBitmapButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { 
	ASSERT(lpDrawItemStruct != NULL); 
 
	// first do default processing 
	CRoundButton::DrawItem(lpDrawItemStruct); 
	 
	CDC* pDC   = CDC::FromHandle(lpDrawItemStruct->hDC); 
	UINT state = lpDrawItemStruct->itemState; 
 
	if( m_hIcon ) { 
		CRgn rgn; 
 
		if( m_bStretch ) { 
			rgn.CreateRectRgn(m_ptLeft.x-m_nRadius/2, m_ptCentre.y-m_nRadius,  
				m_ptRight.x+m_nRadius/2, m_ptCentre.y+m_nRadius); 
		} else { 
			rgn.CreateEllipticRgn(m_ptCentre.x-m_nRadius, m_ptCentre.y-m_nRadius,  
				m_ptCentre.x+m_nRadius, m_ptCentre.y+m_nRadius); 
		} 
 
		pDC->SelectClipRgn(&rgn); 
 
		CPoint pt = CPoint( m_ptCentre.x - m_SizeIcon.cx/2, m_ptCentre.y - m_SizeIcon.cy/2 ); 
 
		if( state & ODS_SELECTED ) 
			pt.Offset(1,1); 
 
		pDC->SetBkMode(TRANSPARENT); 
 
		::DrawIconEx( 
			pDC->GetSafeHdc(), 
			pt.x, pt.y, 
			m_hIcon, 
			m_SizeIcon.cx, 
			m_SizeIcon.cy, 
			0, 0, 
			DI_NORMAL 
		); 
 
		pDC->SelectClipRgn(NULL); 
		rgn.DeleteObject(); 
	} 
}