skinbutton.cpp

换肤窗口也就是窗口内的基本元素及窗口外观会随着要求不断的变换风格。本实例中的窗口可以实现NeoStyle和XpStyle两种风格的互换。教你如何定制窗口框架、标题、边框等

// SkinButton.cpp : implementation file
//

#include "stdafx.h"
#include "SkinButton.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CSkinButton
IMPLEMENT_DYNAMIC(CSkinButton, CButton)

CSkinButton::CSkinButton()
{
	m_res = NULL;
	m_bMouseIn = m_bDown = FALSE;
	m_backcolor = ::GetSysColor(COLOR_BTNFACE);
	m_textcolor = ::GetSysColor(COLOR_BTNTEXT);

}

CSkinButton::~CSkinButton()
{
}


BEGIN_MESSAGE_MAP(CSkinButton, CButton)
	//{{AFX_MSG_MAP(CSkinButton)
	ON_WM_PAINT()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_SETFOCUS()
	ON_WM_KILLFOCUS()
	ON_WM_ERASEBKGND()
	ON_WM_KEYDOWN()
	ON_WM_KEYUP()
	ON_WM_ENABLE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSkinButton message handlers
CString GetPathName( const char * filename );
CString GetFileName( const char * filename, int ext = 0);
char *next_token( char *buf, char *token, char *stopchars );


BOOL CSkinButtonResource::LoadSkin(const char *skinfile)
{
	static const char * ps = "Buttons";
	char buf[1000];
	CString path = GetPathName( skinfile );

	GetPrivateProfileString( ps, "Bitmap", "", buf, 1000, skinfile );
	if ( *buf == 0 || !m_bmpButton.LoadBitmap( path + "/" + GetFileName( buf,1 )) )
		return FALSE;

	m_TopHeight = GetPrivateProfileInt( ps, "TopHeight", 0, skinfile );
	m_BottomHeight = GetPrivateProfileInt( ps, "BottomHeight", 0, skinfile );
	m_LeftWidth = GetPrivateProfileInt( ps, "LeftWidth", 0, skinfile );
	m_RightWidth = GetPrivateProfileInt( ps, "RightWidth", 0, skinfile );

	m_bTrans = GetPrivateProfileInt( ps, "Trans", 0, skinfile );
	

	m_bInited = TRUE;
	return TRUE;
}

BOOL CSkinButtonResource::DrawAImage(CDC *pDC, CRect r, CRect sr)
{
	int w = sr.Width();
	int h = sr.Height();
	int tw = r.Width();
	int th = r.Height();
	int x = sr.left;
	int y = sr.top;

	m_bmpButton.Draw( pDC, 0, 0, CRect(x, y, x + m_LeftWidth, y + m_TopHeight) );
	m_bmpButton.Draw( pDC, tw - m_RightWidth, 0, CRect(x + w-m_RightWidth, y, x + w +m_RightWidth,y+m_TopHeight) );
	m_bmpButton.Draw( pDC, 0, th-m_BottomHeight, CRect(x, y+h-m_BottomHeight, x+m_LeftWidth, y+h) );
	m_bmpButton.Draw( pDC, tw - m_RightWidth, th-m_BottomHeight, CRect(x+w -m_RightWidth, y+h-m_BottomHeight, x+w, y+h) );

	m_bmpButton.StretchDraw( pDC, CRect( m_LeftWidth, 0, tw - m_RightWidth, m_TopHeight ),
		CRect( x + m_LeftWidth, y, x + w-m_RightWidth, y+m_TopHeight ) );
	m_bmpButton.StretchDraw( pDC, CRect( m_LeftWidth, th-m_BottomHeight, tw - m_RightWidth, th ),
		CRect( x + m_LeftWidth, y+h-m_BottomHeight, x + w-m_RightWidth, y+h ) );
	
	m_bmpButton.StretchDraw( pDC, CRect( 0, m_TopHeight, m_LeftWidth, th - m_BottomHeight ),
		CRect( x, y+m_TopHeight, x + m_LeftWidth , y+h-m_BottomHeight  ) );

	m_bmpButton.StretchDraw( pDC, CRect( tw - m_RightWidth, m_TopHeight, tw, th - m_BottomHeight  ),
		CRect( x + w-m_RightWidth, y+m_TopHeight, x+w, y+h-m_BottomHeight ) );

	m_bmpButton.StretchDraw( pDC, CRect( m_LeftWidth, m_TopHeight, tw - m_RightWidth, th - m_BottomHeight ),
		CRect( x + m_LeftWidth, y + m_TopHeight, x + w-m_RightWidth, y+h-m_BottomHeight ) );

	return TRUE;
}

BOOL CSkinButtonResource::DrawImage(CDC *pDC, CRect r, int state)
{		
	int w = m_bmpButton.Width();
	int h = m_bmpButton.Height();
	if ( state == 0 )
	{
		//nomral
		pDC->Draw3dRect( r, RGB(0,0,255), RGB(0, 0, 255 ) );
		//pDC->TextOut( 0, 0, "normal");
		DrawAImage( pDC, r, CRect( 0, 0, w/5, h ) );		
	}
	else if ( state == 1 )
	{
		//hover
		pDC->Draw3dRect( r, RGB(0,255,0), RGB(0, 255, 0 ) );
		//pDC->TextOut( 0, 0, "hover");
		DrawAImage( pDC, r, CRect( 3 * w/5, 0, 4 * w/5, h ) );
	}
	else if ( state == 2 )
	{
		//down
		pDC->Draw3dRect( r, RGB(255,0,0), RGB(255, 0, 0 ) );
		//pDC->TextOut( 0, 0, "down");
		DrawAImage(pDC, r,  CRect( w/5, 0, 2 * w/5, h ) );
	}
	else if ( state == 3 )
	{
		//normal with focus
		pDC->Draw3dRect( r, RGB(255,255,0), RGB(255, 255, 0 ) );
		//pDC->TextOut( 0, 0, "focus");
		DrawAImage( pDC, r, CRect( 3 * w/5, 0, 4 * w/5, h ) );
	}
	else if ( state == 4 )
	{
	
		pDC->Draw3dRect( r, RGB(255,255,0), RGB(255, 255, 0 ) );

		DrawAImage( pDC, r, CRect( 2 * w/5, 0, 3 * w/5, h ) );
	}
	return TRUE;
}


BOOL CSkinButton::DrawImage(CMyBitmap &bmp)
{
	m_bFocus = GetFocus()->GetSafeHwnd() == m_hWnd;
	m_bEnable = !(GetWindowLong(m_hWnd,GWL_STYLE) & WS_DISABLED);
	
	CBitmap *obmp;
	CDC memDC;
	CClientDC dc(0);
	CRect r;
	GetClientRect(r);

	memDC.CreateCompatibleDC(&dc);
	bmp.CreateCompatibleBitmap(&dc, r.Width(), r.Height() );
	obmp = memDC.SelectObject( &bmp );
	
	if ( !m_bEnable )
	{
		m_res->DrawImage( &memDC, r, 4 );
	}
	else
	if ( m_bMouseIn &&m_bDown )
	{
		m_res->DrawImage( &memDC, r, 2);
	}
	else if ( m_bMouseIn )
	{
		m_res->DrawImage( &memDC, r, 1 );
	}
	else if ( m_bFocus )
	{
		m_res->DrawImage( &memDC, r, 3 );
	}
	else
	{
		m_res->DrawImage( &memDC, r,0  );
	}
	memDC.SelectObject( obmp );
	return TRUE;

}

void CSkinButton::OnPaint() 
{
	if ( !m_res || !m_res->m_bInited )
	{
		Default();
		return;
	}
	//Note:!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
	// to draw button, cliprgn is needed
	//
	CPaintDC dc(this); // device context for painting
	CRect r;
	CMyBitmap bmp;
	GetClientRect(r);
	DrawImage(bmp);
	SetWindowRgn(bmp.CreateRgnFromFile(RGB(255,0,255)), TRUE );

	
	HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
	GetWindowRgn(hRgn);				
	::SelectClipRgn(dc.GetSafeHdc(), hRgn);
	bmp.Draw( &dc, r );	
	dc.SelectClipRgn(NULL);
	DeleteObject(hRgn);
	
	//dc.BitBlt( 0, 0, r.Width(), r.Height(), &memDC, 0, 0, SRCCOPY);
	DrawText( &dc );

	// TODO: Add your message handler code here
	// Do not call CButton::OnPaint() for painting messages
}

void CSkinButton::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
	GetWindowRgn(hRgn);		

	if ( PtInRegion( hRgn, point.x, point.y ))
	{
		if ( !m_bMouseIn)
		{
			m_bMouseIn = TRUE;
			//GetRegion();
			Invalidate();
			UpdateWindow();
			SetCapture();
		}
	}
	else
	{
		if ( m_bMouseIn)
		{
			m_bMouseIn = FALSE;
			//GetRegion();
			Invalidate();
			UpdateWindow();
			if ( !m_bDown )
				ReleaseCapture();
		}

	}
	DeleteObject(hRgn);
}

void CSkinButton::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default	
	//CButton::OnLButtonDown(nFlags, point);
	m_bDown = TRUE;
	m_bMouseIn = TRUE;
	//GetRegion();
	Invalidate();
	UpdateWindow();
	SetFocus();



}

void CSkinButton::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	ReleaseCapture();	
	m_bDown = FALSE;
	if ( m_bMouseIn )
	{
		m_bMouseIn = FALSE;
		//GetRegion();
		Invalidate();
		UpdateWindow();
		GetParent()->SendMessage( WM_COMMAND, GetDlgCtrlID(), (LPARAM)m_hWnd );
	}
	else
	{
		//GetRegion();
		Invalidate();
		UpdateWindow();

	}
}

void CSkinButton::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	
	//CButton::OnLButtonDblClk(nFlags, point);
}



void CSkinButton::OnSetFocus(CWnd* pOldWnd) 
{
	//CButton::OnSetFocus(pOldWnd);
	
	// TODO: Add your message handler code here
	
}

void CSkinButton::OnKillFocus(CWnd* pNewWnd) 
{
	//CButton::OnKillFocus(pNewWnd);
	
	// TODO: Add your message handler code here
	
}

BOOL CSkinButton::DrawText(CDC *pDC )
{
	CRect r;
	CString str;
	GetClientRect( r );
	GetWindowText( str );


	CFont *ofont;
	ofont = pDC->SelectObject( GetParent()->GetFont() );

	if ( m_bEnable )
		pDC->SetTextColor(m_textcolor);
	else
		pDC->SetTextColor(RGB(100,100,100));
	pDC->SetBkMode(TRANSPARENT);
	pDC->DrawText( str, r, DT_CENTER | DT_SINGLELINE | DT_VCENTER );

	pDC->SelectObject(ofont);
	return TRUE;
}




BOOL CSkinButton::OnEraseBkgnd(CDC* pDC) 
{
	// TODO: Add your message handler code here and/or call default	
	return TRUE;
}

void CSkinButton::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	if ( nChar == VK_SPACE )
		OnLButtonDown( 0, 0 );
	//CButton::OnKeyDown(nChar, nRepCnt, nFlags);
}

void CSkinButton::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	if ( nChar == VK_SPACE )
		OnLButtonUp( 0, 0 );
	
	//CButton::OnKeyUp(nChar, nRepCnt, nFlags);
}


BOOL CSkinButton::GetRegion()
{
	CMyBitmap bmp;
	/*
		if ( hRgn ) 
	{
		dc.SelectClipRgn(NULL);
		DeleteObject(hRgn);
	}
	HRGN  hRgn = NULL;
	if ( m_res->m_bTrans )
	{
		HRGN rgn;
		rgn = bmp.CreateRgnFromFile(RGB(255,0,255));
		//strange, must after ClipRgn
		//SetWindowPos( NULL, 0, 0, bmp.Width(), bmp.Height(), SWP_NOZORDER | SWP_NOMOVE );
		HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
		SetWindowRgn( rgn, TRUE );	
		GetWindowRgn(hRgn);				
		::SelectClipRgn(dc.GetSafeHdc(), hRgn);
	}
	*/
	//DrawImage( bmp );
	CRgn rgn;
	rgn.CreateEllipticRgn( 00, 00, 50, 50 );
	SetWindowRgn((HRGN)rgn.Detach(), TRUE );
	//SetWindowRgn(bmp.CreateRgnFromFile(RGB(255,0,255)), TRUE );
	return TRUE;
}

BOOL CSkinButton::EnableWindow( BOOL bEnable)
{
	CWnd::EnableWindow( bEnable );
	OnPaint();
	return TRUE;
}

void CSkinButton::OnEnable(BOOL bEnable) 
{
//	CButton::OnEnable(bEnable);
	if ( bEnable )
		ModifyStyle( WS_DISABLED, 0, 0);
	else
		ModifyStyle( 0, WS_DISABLED, 0);
	// TODO: Add your message handler code here
	Invalidate();
	UpdateWindow();
}