bxcoolbtn.cpp

一个vc中管理资源文件ID的插件

// BXCoolBtn.cpp : implementation file
//

#include "stdafx.h"
#include "BXCoolBtn.h"

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

const int nDropBtnWidth =  13;
/////////////////////////////////////////////////////////////////////////////
// BXCoolBtn
// ========
// 
// To Use:
// 1. Create a Bitmap resource 16x15 Pixels normal default size for a toolbar
//    bitmap.
//
// 2. Call BXCoolBtns on Create function.
//
// 3. Call SetButtonImage specificing the Transparency color reference.
//    (Usally RGB(255, 0, 255) magenta)
// 
// 4. Add menu items with AddMenuItem using nMenuFlags to add disabled and
///   seperator menu items
//
// 5. Add the appropiate ON_COMMAND handlers in the parent windows message map
//
// 6. Enjoy...
////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  BXCoolBtn
//
// DESCRIPTION:	
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BXCoolBtn::BXCoolBtn()
{
  m_bPushed = FALSE;
  m_bLoaded = FALSE;
  m_bMenuPushed = FALSE;
  m_bMenuLoaded = FALSE;

  ZeroMemory(&m_bm, sizeof m_bm);
  m_menu.CreatePopupMenu();

}

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  ~BXCoolBtn
//
// DESCRIPTION:	
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BXCoolBtn::~BXCoolBtn()
{
}


BEGIN_MESSAGE_MAP(BXCoolBtn, CButton)
	//{{AFX_MSG_MAP(BXCoolBtn)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_SETFOCUS()
	ON_WM_SYSCOLORCHANGE()
	ON_WM_ERASEBKGND()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// BXCoolBtn message handlers

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  Create
//
// DESCRIPTION:	Create the button
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BOOL BXCoolBtn::Create( LPCTSTR lpszCaption, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID )
{
  dwStyle |= BS_OWNERDRAW; // Enforce
  m_pParentWnd = pParentWnd;
  m_nID = nID;
  return CButton::Create(lpszCaption, dwStyle, rect, pParentWnd, nID );	;
}



////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  DrawItem
//
// DESCRIPTION:	Called in response to draw the button
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
// David Wulff	8/8/00    1.1       Updated to look like the Office(r) 2000 button.
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::DrawItem(DRAWITEMSTRUCT* lpDIS) 
{
  if (lpDIS->CtlType != ODT_BUTTON)
    return;

  CFont *pFont = CFont::FromHandle((HFONT)GetStockObject(DEFAULT_GUI_FONT));

  CDC dcMem;
  CBitmap bmp;

  CRect btnRect(lpDIS->rcItem);
  CRect trueRect(btnRect);

  CDC *pDC = CDC::FromHandle(lpDIS->hDC);

  ////////////////////////////////////////
  // Button Background                  //
  ////////////////////////////////////////
  pDC->FillRect(trueRect,&CBrush(GetSysColor(COLOR_BTNFACE)));

  BOOL bDefaultBtn = GetWindowLong(m_hWnd,GWL_STYLE) & BS_DEFPUSHBUTTON;
  BOOL bDisabled = ODS_DISABLED & lpDIS->itemState;
 
  if (bDefaultBtn)
    btnRect.DeflateRect(1,1);

  CRect rectFocus(btnRect);

//  rectFocus.DeflateRect(4,4);
  rectFocus.DeflateRect(3,3);

  if (!m_bMenuPushed)
    rectFocus.OffsetRect(m_bPushed,m_bPushed);

  rectFocus.right -= nDropBtnWidth;


  ////////////////////////////////////////
  // Button in a normal state           //
  ////////////////////////////////////////
  if (!m_bPushed || m_bMenuPushed)
    pDC->DrawFrameControl(&btnRect,DFC_BUTTON,DFCS_BUTTONPUSH);
  

  ////////////////////////////////////////
  // Default Button State               //
  ////////////////////////////////////////
  if ((bDefaultBtn || m_bPushed) && !bDisabled)
  {
    pDC->FrameRect(&lpDIS->rcItem,CBrush::FromHandle((HBRUSH)GetStockObject(BLACK_BRUSH)));
    if (m_bPushed && !m_bMenuPushed)
      pDC->FrameRect(&btnRect,CBrush::FromHandle((HBRUSH)GetStockObject(BLACK_BRUSH))); 
  }


  ////////////////////////////////////////
  // State Focus                        //
  ////////////////////////////////////////
   if (lpDIS->itemState & ODS_FOCUS || m_bPushed) 
     if (!m_bMenuPushed)
        pDC->DrawFocusRect(&rectFocus);


  ////////////////////////////////////////
  // Action Focus                       //
  ////////////////////////////////////////
  if ((lpDIS->itemAction & ODA_FOCUS))
     if (!m_bMenuPushed)
        pDC->DrawFocusRect(&rectFocus);


  ////////////////////////////////////////
  // Draw out bitmap                    //
  ////////////////////////////////////////
  if (m_bLoaded)
    m_IL.DrawIndirect( pDC,0,CPoint(3+m_bPushed,3+m_bPushed),CSize(m_bm.bmWidth, m_bm.bmHeight),CPoint(0,0),ILD_NORMAL);

  ////////////////////////////////////////
  // Draw out text                      //
  ////////////////////////////////////////
  pDC->SelectObject(pFont);
  CRect rectText(rectFocus);
  rectFocus.left += m_bm.bmWidth + 2;
 
  CString strCaption;
  GetWindowText(strCaption);
  pDC->SetBkMode(TRANSPARENT);
  pDC->SetBkColor(GetSysColor(COLOR_BTNFACE));

  if (ODS_DISABLED & lpDIS->itemState)
  {
    rectFocus.OffsetRect(1,1);
    pDC->SetTextColor(GetSysColor(COLOR_WINDOW));
    pDC->DrawText(strCaption,rectFocus,DT_SINGLELINE|DT_CENTER|DT_VCENTER);

    rectFocus.OffsetRect(-1,-1);
    pDC->SetTextColor(GetSysColor(COLOR_GRAYTEXT));
    pDC->DrawText(strCaption,rectFocus,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
  }
  else
  {
    pDC->SetTextColor(GetSysColor(COLOR_WINDOWTEXT));
    pDC->DrawText(strCaption,rectFocus,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
  }


  CRect rectSplit(btnRect);
  rectSplit.DeflateRect(2,2);
  rectSplit.right -= nDropBtnWidth;

  rectSplit.top -= 2;

  if(m_bPushed)
	  rectSplit.OffsetRect(1, 1);

  ////////////////////////////////////////
  // Drop down split                    //
  ////////////////////////////////////////
  CPen brFace(PS_SOLID,1,GetSysColor(COLOR_3DSHADOW));
  pDC->SelectObject(&brFace);
  pDC->MoveTo(rectSplit.right, rectSplit.top);
  pDC->LineTo(rectSplit.right, rectSplit.bottom);
  

  CPen brLite(PS_SOLID,1,GetSysColor(COLOR_3DHILIGHT));
  pDC->SelectObject(&brLite);
  pDC->MoveTo(rectSplit.right+1 , rectSplit.top);
  pDC->LineTo(rectSplit.right+1, rectSplit.bottom);


  rectSplit.left = rectSplit.right;
  rectSplit.right += nDropBtnWidth;

  CPoint pt(rectSplit.CenterPoint());
  pt += CPoint(m_bPushed,m_bPushed);

  CPen penBlack(PS_SOLID, 1, bDisabled ? GetSysColor(COLOR_GRAYTEXT) : GetSysColor(COLOR_WINDOWTEXT));
  pDC->SelectObject(&penBlack);
  DrawArrow(pDC,pt);
  
  ////////////////////////////////////////
  // Drop down state                    //
  ////////////////////////////////////////
  if (m_bMenuPushed && !bDisabled)
  {    
    rectSplit.InflateRect(1,1);
    pDC->DrawEdge(rectSplit,BDR_SUNKENOUTER, BF_RECT);
    
  }

	
}

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  DrawArrow
//
// DESCRIPTION:	Draws drop down arrow, we could use DrawFrameControl - a bit too 
//              messy
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::DrawArrow(CDC* pDC,CPoint ArrowTip)
{

  CPoint ptDest;

  pDC->SetPixel(ArrowTip,RGB(0,0,0));

  ArrowTip -= CPoint(1,1);
  pDC->MoveTo(ArrowTip);
  
  ptDest = ArrowTip;
  ptDest += CPoint(3,0);
  pDC->LineTo(ptDest);

  ArrowTip -= CPoint(1,1);
  pDC->MoveTo(ArrowTip);

  ptDest = ArrowTip;
  ptDest += CPoint(5,0);
  pDC->LineTo(ptDest);

}


////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  OnLButtonDown
//
// DESCRIPTION:	handles button pressed state, including drop down menu
//              
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::OnLButtonDown(UINT nFlags, CPoint point) 
{

  if (m_bMenuPushed)
  {
    m_bMenuPushed = FALSE;
    Invalidate();
    return;

  }

  if (HitMenuBtn(point))
  {
    m_bMenuPushed = TRUE;
    Invalidate();

    CRect rc;
    GetWindowRect(rc);
    
    int x = rc.left;
    int y = rc.bottom;
   
    m_menu.TrackPopupMenu(TPM_LEFTALIGN|TPM_LEFTBUTTON,x,y,m_pParentWnd);

    m_bMenuPushed = FALSE;
  }
  else
  {
	  m_bPushed = TRUE;
  }

  Invalidate();

	
	CButton::OnLButtonDown(nFlags, point);
}

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  OnLButtonUp
//
// DESCRIPTION:	Redraws button in normal state
//              
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
// DJ WULFF     6 SEP 00            sends notification to parent window
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::OnLButtonUp(UINT nFlags, CPoint point) 
{
	if (m_bPushed)
	{
		m_bPushed = FALSE;
		ReleaseCapture();
		Invalidate();

		m_pParentWnd->PostMessage(WM_COMMAND, m_nID, 0);
	}

	CButton::OnLButtonUp(nFlags, point);
}

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  OnMouseMove
//
// DESCRIPTION:	Tracks mouse whilst pressed
//              
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::OnMouseMove(UINT nFlags, CPoint point) 
{
  if (m_bPushed)
  {
    ClientToScreen(&point);
    
    if (WindowFromPoint(point) != this)
    {
  	  m_bPushed = FALSE;
      ReleaseCapture();
      Invalidate();
    }
  }
	
	CButton::OnMouseMove(nFlags, point);
}

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  SetButtonImage
//
// DESCRIPTION:	Sets the button image, COLORREF crMask specifics the transparency
//              color              
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BOOL BXCoolBtn::SetButtonImage(UINT nResourceId, COLORREF crMask)
{
  // The ID must exist also as a bitmap resource!!!
  m_btnImage.LoadBitmap(nResourceId);  
  m_btnImage.GetObject(sizeof m_bm, &m_bm);
  m_IL.Create( nResourceId, m_bm.bmWidth, 1, crMask );
  m_bLoaded = TRUE;

  return m_bLoaded;
}

void BXCoolBtn::OnSetFocus(CWnd* pOldWnd) 
{
	CButton::OnSetFocus(pOldWnd);
	
  Invalidate();
	
}


////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  OnSysColorChange
//
// DESCRIPTION:	Called when system colors change, force a button redraw
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
void BXCoolBtn::OnSysColorChange() 
{
	CButton::OnSysColorChange();
  Invalidate();	
}
 
////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  HitMenuBtn
//
// DESCRIPTION:	Helper function to test for menu button hit...
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BOOL BXCoolBtn::HitMenuBtn(CPoint point)
{
  if (!m_bMenuLoaded)
    return FALSE; // Don't allow menu button drop down if no menu items are loaded
  
  ClientToScreen(&point);

  CRect rect;
  GetWindowRect(rect);
  rect.left = rect.right - nDropBtnWidth;

  return rect.PtInRect(point);    
}


////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  AddMenuItem
//
// DESCRIPTION:	Adds a menu item and id to our menu.
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BOOL BXCoolBtn::AddMenuItem(UINT nMenuId,const CString strMenu, UINT nMenuFlags)
{
  BOOL bRet = m_menu.AppendMenu(nMenuFlags | MF_STRING, nMenuId, (LPCTSTR)strMenu);
  
  m_bMenuLoaded |= bRet;
  
  return bRet;
}

BOOL BXCoolBtn::OnEraseBkgnd(CDC* pDC) 
{

	
	return TRUE;
}