coolbtn.cpp

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// CoolBtn.cpp : implementation file
//

#include "stdafx.h"
#include "CoolBtn.h"

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

const int nDropBtnWidth =  16;
/////////////////////////////////////////////////////////////////////////////
// CCoolBtn
// ========
// 
// To Use:
// 1. Create a Bitmap resource 16x15 Pixels normal default size for a toolbar
//    bitmap.
//
// 2. Call CCoolBtns 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...
//
//
// FIX LIST:
// Name					Version		Notes
// Rick H				1.1			BN_CLICK message and paint arrow fix.
// Purna				1.1			Unwanted message removed
// Ernest Laurentin		1.1			Force BS_OWNERDRAW during subclassing
// amitbamzai			1.1			Helper functions to Enable/Remove Menu items
// Julia Larson			1.1			New Add Image Function
// Stephane Rodriguez	1.1			New ChangeMenuFlags function
//							
//
////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  CCoolBtn
//
// DESCRIPTION:	
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
CCoolBtn::CCoolBtn()
{
	m_bPushed		= FALSE;
	m_bLoaded		= FALSE;
	m_bMenuPushed	= FALSE;
	m_bMenuLoaded	= FALSE;
	m_bDefaultBtn	= FALSE;

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

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


BEGIN_MESSAGE_MAP(CCoolBtn, CButton)
	//{{AFX_MSG_MAP(CCoolBtn)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_SETFOCUS()
	ON_WM_KILLFOCUS()
	ON_WM_SYSCOLORCHANGE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCoolBtn message handlers

////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  Create
//
// DESCRIPTION:	Create the button
//
// NOTES:			
//
// MAINTENANCE:
// Name:		  Date:	  Version:	Notes:
// NT ALMOND	210100	1.0			  Origin
//
////////////////////////////////////////////////////////////////////////////////
BOOL CCoolBtn::Create( LPCTSTR lpszCaption, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID )
{
	dwStyle |= BS_OWNERDRAW; // Enforce
	m_pParentWnd = pParentWnd;
	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
//
////////////////////////////////////////////////////////////////////////////////
void CCoolBtn::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 bDisabled = ODS_DISABLED & lpDIS->itemState;

	if (m_bDefaultBtn)
		btnRect.DeflateRect(1,1);

	CRect rectFocus(btnRect);

	rectFocus.DeflateRect(4,4);

	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 ((m_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                    //
	////////////////////////////////////////

	// Draw out bitmap
	if (m_bLoaded)
	{
		if (!bDisabled)
		{
			m_IL.DrawIndirect(pDC,0,CPoint(6+m_bPushed,6+m_bPushed), CSize(m_bm.bmWidth, m_bm.bmHeight), CPoint(0,0),ILD_NORMAL);
		}
		else
		{
			pDC->DrawState(CPoint(6+m_bPushed,6+m_bPushed), CSize(m_bm.bmWidth, m_bm.bmHeight), m_hbmpDisabled, DST_BITMAP | DSS_DISABLED);
		}
	}


	////////////////////////////////////////
	// 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;


	////////////////////////////////////////
	// 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 CCoolBtn::DrawArrow(CDC* pDC,CPoint ArrowTip)
{

	CPoint ptDest;

	CPen* pPen = pDC->GetCurrentPen();
	LOGPEN logPen;
	pPen->GetLogPen(&logPen);
	pDC->SetPixel(ArrowTip, logPen.lopnColor);


	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);

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

	ptDest = ArrowTip;
	ptDest += CPoint(7,0);
	pDC->LineTo(ptDest);
}


////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION:	  OnLButtonDown
//
// DESCRIPTION:	handles button pressed state, including drop down menu