btnst.cpp

多窗口层叠文件示例

#ifdef	BTNST_USE_BCMENU
			BCMenu* psub = (BCMenu*)m_menuPopup.GetSubMenu(0);
			if (m_csCallbacks.hWnd)	::SendMessage(m_csCallbacks.hWnd, m_csCallbacks.nMessage, (WPARAM)psub, m_csCallbacks.lParam);
			DWORD dwRetValue = psub->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD, rWnd.left, rWnd.bottom, this, NULL);
#else
			HMENU hSubMenu = ::GetSubMenu(m_hMenu, 0);
			if (m_csCallbacks.hWnd)	::SendMessage(m_csCallbacks.hWnd, m_csCallbacks.nMessage, (WPARAM)hSubMenu, m_csCallbacks.lParam);
			DWORD dwRetValue = ::TrackPopupMenuEx(hSubMenu, TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD, rWnd.left, rWnd.bottom, m_hParentWndMenu, NULL);
#endif

			m_bMenuDisplayed = FALSE;
			Invalidate();

			if (dwRetValue)
				::PostMessage(m_hParentWndMenu, WM_COMMAND, MAKEWPARAM(dwRetValue, 0), (LPARAM)NULL);
		} // if
		else
		{
			// Handle the URL (if any)
			if (_tcslen(m_szURL) > 0)
			{
				SHELLEXECUTEINFO	csSEI;

				memset(&csSEI, 0, sizeof(csSEI));
				csSEI.cbSize = sizeof(SHELLEXECUTEINFO);
				csSEI.fMask = SEE_MASK_FLAG_NO_UI;
				csSEI.lpVerb = _T("open");
				csSEI.lpFile = m_szURL;
				csSEI.nShow = SW_SHOWMAXIMIZED;
				::ShellExecuteEx(&csSEI);
			} // if
		} // else
	} // else

	return FALSE;
} // End of OnClicked

void CButtonST::DrawItem(LPDRAWITEMSTRUCT lpDIS)
{
	CDC*	pDC = CDC::FromHandle(lpDIS->hDC);

	// Checkbox?
	if (m_bIsCheckBox)
	{
		m_bIsPressed  =  (lpDIS->itemState & ODS_SELECTED) || (m_nCheck != 0);
	} // if
	else	// Normal button OR other button style ...
	{
		m_bIsPressed = (lpDIS->itemState & ODS_SELECTED);

		// If there is a menu and it's displayed, draw the button as pressed
		if (
#ifdef	BTNST_USE_BCMENU
			m_menuPopup.m_hMenu 
#else
			m_hMenu 
#endif
			&& m_bMenuDisplayed)	m_bIsPressed = TRUE;
	} // else

	m_bIsFocused  = (lpDIS->itemState & ODS_FOCUS);
	m_bIsDisabled = (lpDIS->itemState & ODS_DISABLED);

	CRect itemRect = lpDIS->rcItem;

	pDC->SetBkMode(TRANSPARENT);

	// Prepare draw... paint button background

	// Draw transparent?
	if (m_bDrawTransparent)
		PaintBk(pDC);
	else
		OnDrawBackground(pDC, &itemRect);

	// Draw button border
	OnDrawBorder(pDC, &itemRect);

	// Read the button's title
	CString sTitle;
	GetWindowText(sTitle);

	CRect captionRect = lpDIS->rcItem;

	// Draw the icon
	if (m_csIcons[0].hIcon)
	{
		DrawTheIcon(pDC, !sTitle.IsEmpty(), &lpDIS->rcItem, &captionRect, m_bIsPressed, m_bIsDisabled);
	} // if

	if (m_csBitmaps[0].hBitmap)
	{
		pDC->SetBkColor(RGB(255,255,255));
		DrawTheBitmap(pDC, !sTitle.IsEmpty(), &lpDIS->rcItem, &captionRect, m_bIsPressed, m_bIsDisabled);
	} // if

	// Write the button title (if any)
	if (sTitle.IsEmpty() == FALSE)
	{
		DrawTheText(pDC, (LPCTSTR)sTitle, &lpDIS->rcItem, &captionRect, m_bIsPressed, m_bIsDisabled);
	} // if

	if (m_bIsFlat == FALSE || (m_bIsFlat && m_bDrawFlatFocus))
	{
		// Draw the focus rect
		if (m_bIsFocused)
		{
			CRect focusRect = itemRect;
			focusRect.DeflateRect(3, 3);
			pDC->DrawFocusRect(&focusRect);
		} // if
	} // if
} // End of DrawItem

void CButtonST::PaintBk(CDC* pDC)
{
	CClientDC clDC(GetParent());
	CRect rect;
	CRect rect1;

	GetClientRect(rect);

	GetWindowRect(rect1);
	GetParent()->ScreenToClient(rect1);

	if (m_dcBk.m_hDC == NULL)
	{
		m_dcBk.CreateCompatibleDC(&clDC);
		m_bmpBk.CreateCompatibleBitmap(&clDC, rect.Width(), rect.Height());
		m_pbmpOldBk = m_dcBk.SelectObject(&m_bmpBk);
		m_dcBk.BitBlt(0, 0, rect.Width(), rect.Height(), &clDC, rect1.left, rect1.top, SRCCOPY);
	} // if

	pDC->BitBlt(0, 0, rect.Width(), rect.Height(), &m_dcBk, 0, 0, SRCCOPY);
} // End of PaintBk

HBITMAP CButtonST::CreateBitmapMask(HBITMAP hSourceBitmap, DWORD dwWidth, DWORD dwHeight, COLORREF crTransColor)
{
	HBITMAP		hMask		= NULL;
	HDC			hdcSrc		= NULL;
	HDC			hdcDest		= NULL;
	HBITMAP		hbmSrcT		= NULL;
	HBITMAP		hbmDestT	= NULL;
	COLORREF	crSaveBk;
	COLORREF	crSaveDestText;

	hMask = ::CreateBitmap(dwWidth, dwHeight, 1, 1, NULL);
	if (hMask == NULL)	return NULL;

	hdcSrc	= ::CreateCompatibleDC(NULL);
	hdcDest	= ::CreateCompatibleDC(NULL);

	hbmSrcT = (HBITMAP)::SelectObject(hdcSrc, hSourceBitmap);
	hbmDestT = (HBITMAP)::SelectObject(hdcDest, hMask);

	crSaveBk = ::SetBkColor(hdcSrc, crTransColor);

	::BitBlt(hdcDest, 0, 0, dwWidth, dwHeight, hdcSrc, 0, 0, SRCCOPY);

	crSaveDestText = ::SetTextColor(hdcSrc, RGB(255, 255, 255));
	::SetBkColor(hdcSrc,RGB(0, 0, 0));

	::BitBlt(hdcSrc, 0, 0, dwWidth, dwHeight, hdcDest, 0, 0, SRCAND);

	SetTextColor(hdcDest, crSaveDestText);

	::SetBkColor(hdcSrc, crSaveBk);
	::SelectObject(hdcSrc, hbmSrcT);
	::SelectObject(hdcDest, hbmDestT);

	::DeleteDC(hdcSrc);
	::DeleteDC(hdcDest);

	return hMask;
} // End of CreateBitmapMask

//
// Parameters:
//		[IN]	bHasTitle
//				TRUE if the button has a text
//		[IN]	rpItem
//				A pointer to a RECT structure indicating the allowed paint area
//		[IN/OUT]rpTitle
//				A pointer to a CRect object indicating the paint area reserved for the
//				text. This structure will be modified if necessary.
//		[IN]	bIsPressed
//				TRUE if the button is currently pressed
//		[IN]	dwWidth
//				Width of the image (icon or bitmap)
//		[IN]	dwHeight
//				Height of the image (icon or bitmap)
//		[OUT]	rpImage
//				A pointer to a CRect object that will receive the area available to the image
//
void CButtonST::PrepareImageRect(BOOL bHasTitle, RECT* rpItem, CRect* rpTitle, BOOL bIsPressed, DWORD dwWidth, DWORD dwHeight, CRect* rpImage)
{
	CRect rBtn;

	rpImage->CopyRect(rpItem);

	switch (m_byAlign)
	{
		case ST_ALIGN_HORIZ:
			if (bHasTitle == FALSE)
			{
				// Center image horizontally
				rpImage->left += ((rpImage->Width() - (long)dwWidth)/2);
			}
			else
			{
				// Image must be placed just inside the focus rect
				rpImage->left += m_ptImageOrg.x;  
				rpTitle->left += dwWidth + m_ptImageOrg.x;
			}
			// Center image vertically
			rpImage->top += ((rpImage->Height() - (long)dwHeight)/2);
			break;

		case ST_ALIGN_HORIZ_RIGHT:
			GetClientRect(&rBtn);
			if (bHasTitle == FALSE)
			{
				// Center image horizontally
				rpImage->left += ((rpImage->Width() - (long)dwWidth)/2);
			}
			else
			{
				// Image must be placed just inside the focus rect
				rpTitle->right = rpTitle->Width() - dwWidth - m_ptImageOrg.x;
				rpTitle->left = m_ptImageOrg.x;
				rpImage->left = rBtn.right - dwWidth - m_ptImageOrg.x;
				// Center image vertically
				rpImage->top += ((rpImage->Height() - (long)dwHeight)/2);
			}
			break;
		
		case ST_ALIGN_VERT:
			// Center image horizontally
			rpImage->left += ((rpImage->Width() - (long)dwWidth)/2);
			if (bHasTitle == FALSE)
			{
				// Center image vertically
				rpImage->top += ((rpImage->Height() - (long)dwHeight)/2);           
			}
			else
			{
				rpImage->top = m_ptImageOrg.y;
				rpTitle->top += dwHeight;
			}
			break;

		case ST_ALIGN_OVERLAP:
			break;
	} // switch
    
	// If button is pressed then press image also
	if (bIsPressed && m_bIsCheckBox == FALSE)
		rpImage->OffsetRect(m_ptPressedOffset.x, m_ptPressedOffset.y);
} // End of PrepareImageRect

void CButtonST::DrawTheIcon(CDC* pDC, BOOL bHasTitle, RECT* rpItem, CRect* rpCaption, BOOL bIsPressed, BOOL bIsDisabled)
{
	BYTE		byIndex		= 0;

	// Select the icon to use
	if ((m_bIsCheckBox && bIsPressed) || (!m_bIsCheckBox && (bIsPressed || m_bMouseOnButton)))
		byIndex = 0;
	else
		byIndex = (m_csIcons[1].hIcon == NULL ? 0 : 1);

	CRect	rImage;
	PrepareImageRect(bHasTitle, rpItem, rpCaption, bIsPressed, m_csIcons[byIndex].dwWidth, m_csIcons[byIndex].dwHeight, &rImage);

	// Ole'!
	pDC->DrawState(	rImage.TopLeft(),
					rImage.Size(), 
					m_csIcons[byIndex].hIcon,
					(bIsDisabled ? DSS_DISABLED : DSS_NORMAL), 
					(CBrush*)NULL);
} // End of DrawTheIcon

void CButtonST::DrawTheBitmap(CDC* pDC, BOOL bHasTitle, RECT* rpItem, CRect* rpCaption, BOOL bIsPressed, BOOL bIsDisabled)
{
	HDC			hdcBmpMem	= NULL;
	HBITMAP		hbmOldBmp	= NULL;
	HDC			hdcMem		= NULL;
	HBITMAP		hbmT		= NULL;

	BYTE		byIndex		= 0;

	// Select the bitmap to use
	if ((m_bIsCheckBox && bIsPressed) || (!m_bIsCheckBox && (bIsPressed || m_bMouseOnButton)))
		byIndex = 0;
	else
		byIndex = (m_csBitmaps[1].hBitmap == NULL ? 0 : 1);

	CRect	rImage;
	PrepareImageRect(bHasTitle, rpItem, rpCaption, bIsPressed, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, &rImage);

	hdcBmpMem = ::CreateCompatibleDC(pDC->m_hDC);

	hbmOldBmp = (HBITMAP)::SelectObject(hdcBmpMem, m_csBitmaps[byIndex].hBitmap);

	hdcMem = ::CreateCompatibleDC(NULL);

	hbmT = (HBITMAP)::SelectObject(hdcMem, m_csBitmaps[byIndex].hMask);

	if (bIsDisabled && m_bShowDisabledBitmap)
	{
		HDC		hDC = NULL;
		HBITMAP	hBitmap = NULL;

		hDC = ::CreateCompatibleDC(pDC->m_hDC);
		hBitmap = ::CreateCompatibleBitmap(pDC->m_hDC, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight);
		HBITMAP	hOldBmp2 = (HBITMAP)::SelectObject(hDC, hBitmap);

		RECT	rRect;
		rRect.left = 0;
		rRect.top = 0;
		rRect.right = rImage.right + 1;
		rRect.bottom = rImage.bottom + 1;
		::FillRect(hDC, &rRect, (HBRUSH)RGB(255, 255, 255));

		COLORREF crOldColor = ::SetBkColor(hDC, RGB(255,255,255));

		::BitBlt(hDC, 0, 0, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcMem, 0, 0, SRCAND);
		::BitBlt(hDC, 0, 0, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcBmpMem, 0, 0, SRCPAINT);

		::SetBkColor(hDC, crOldColor);
		::SelectObject(hDC, hOldBmp2);
		::DeleteDC(hDC);

		pDC->DrawState(	CPoint(rImage.left/*+1*/, rImage.top), 
						CSize(m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight), 
						hBitmap, DST_BITMAP | DSS_DISABLED);

		::DeleteObject(hBitmap);
	} // if
	else
	{
		::BitBlt(pDC->m_hDC, rImage.left, rImage.top, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcMem, 0, 0, SRCAND);

		::BitBlt(pDC->m_hDC, rImage.left, rImage.top, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcBmpMem, 0, 0, SRCPAINT);
	} // else

	::SelectObject(hdcMem, hbmT);
	::DeleteDC(hdcMem);

	::SelectObject(hdcBmpMem, hbmOldBmp);
	::DeleteDC(hdcBmpMem);
} // End of DrawTheBitmap

void CButtonST::DrawTheText(CDC* pDC, LPCTSTR lpszText, RECT* rpItem, CRect* rpCaption, BOOL bIsPressed, BOOL bIsDisabled)
{
	// Draw the button's title
	// If button is pressed then "press" title also
	if (m_bIsPressed && m_bIsCheckBox == FALSE)
		rpCaption->OffsetRect(m_ptPressedOffset.x, m_ptPressedOffset.y);

	// ONLY FOR DEBUG 
	//CBrush brBtnShadow(RGB(255, 0, 0));
	//pDC->FrameRect(rCaption, &brBtnShadow);

	// Center text
	CRect centerRect = rpCaption;
	pDC->DrawText(lpszText, -1, rpCaption, DT_WORDBREAK | DT_CENTER | DT_CALCRECT);
	rpCaption->OffsetRect((centerRect.Width() - rpCaption->Width())/2, (centerRect.Height() - rpCaption->Height())/2);
	/* RFU
	rpCaption->OffsetRect(0, (centerRect.Height() - rpCaption->Height())/2);
	rpCaption->OffsetRect((centerRect.Width() - rpCaption->Width())-4, (centerRect.Height() - rpCaption->Height())/2);
	*/

	pDC->SetBkMode(TRANSPARENT);
	/*
	pDC->DrawState(rCaption->TopLeft(), rCaption->Size(), (LPCTSTR)sTitle, (bIsDisabled ? DSS_DISABLED : DSS_NORMAL), 
					TRUE, 0, (CBrush*)NULL);
	*/
	if (m_bIsDisabled)
	{
		rpCaption->OffsetRect(1, 1);
		pDC->SetTextColor(::GetSysColor(COLOR_3DHILIGHT));
		pDC->DrawText(lpszText, -1, rpCaption, DT_WORDBREAK | DT_CENTER);
		rpCaption->OffsetRect(-1, -1);
		pDC->SetTextColor(::GetSysColor(COLOR_3DSHADOW));
		pDC->DrawText(lpszText, -1, rpCaption, DT_WORDBREAK | DT_CENTER);
	} // if
	else
	{
		if (m_bMouseOnButton || m_bIsPressed) 
		{
			pDC->SetTextColor(m_crColors[BTNST_COLOR_FG_IN]);
			pDC->SetBkColor(m_crColors[BTNST_COLOR_BK_IN]);
		} // if
		else 
		{
			if (m_bIsFocused)
			{ 
				pDC->SetTextColor(m_crColors[BTNST_COLOR_FG_FOCUS]); 
				pDC->SetBkColor(m_crColors[BTNST_COLOR_BK_FOCUS]); 
			} // if
			else 
			{
				pDC->SetTextColor(m_crColors[BTNST_COLOR_FG_OUT]); 
				pDC->SetBkColor(m_crColors[BTNST_COLOR_BK_OUT]); 
			} // else
		} // else
		pDC->DrawText(lpszText, -1, rpCaption, DT_WORDBREAK | DT_CENTER);
	} // if
} // End of DrawTheText

// This function creates a grayscale bitmap starting from a given bitmap.
// The resulting bitmap will have the same size of the original one.
//
// Parameters:
//		[IN]	hBitmap
//				Handle to the original bitmap.
//		[IN]	dwWidth
//				Specifies the bitmap width, in pixels.
//		[IN]	dwHeight
//				Specifies the bitmap height, in pixels.
//		[IN]	crTrans
//				Color to be used as transparent color. This color will be left unchanged.
//
// Return value:
//		If the function succeeds, the return value is the handle to the newly created
//		grayscale bitmap.
//		If the function fails, the return value is NULL.
//
HBITMAP CButtonST::CreateGrayscaleBitmap(HBITMAP hBitmap, DWORD dwWidth, DWORD dwHeight, COLORREF crTrans)
{
	HBITMAP		hGrayBitmap = NULL;
	HDC			hMainDC = NULL, hMemDC1 = NULL, hMemDC2 = NULL;
	HBITMAP		hOldBmp1 = NULL, hOldBmp2 = NULL;

	hMainDC = ::GetDC(NULL);
	if (hMainDC == NULL)	return NULL;
	hMemDC1 = ::CreateCompatibleDC(hMainDC);
	if (hMemDC1 == NULL)
	{
		::ReleaseDC(NULL, hMainDC);
		return NULL;
	} // if
	hMemDC2 = ::CreateCompatibleDC(hMainDC);
	if (hMemDC2 == NULL)
	{
		::DeleteDC(hMemDC1);
		::ReleaseDC(NULL, hMainDC);
		return NULL;
	} // if

	hGrayBitmap = ::CreateCompatibleBitmap(hMainDC, dwWidth, dwHeight);
	if (hGrayBitmap)
	{
		hOldBmp1 = (HBITMAP)::SelectObject(hMemDC1, hGrayBitmap);
		hOldBmp2 = (HBITMAP)::SelectObject(hMemDC2, hBitmap);

		//::BitBlt(hMemDC1, 0, 0, dwWidth, dwHeight, hMemDC2, 0, 0, SRCCOPY);

		DWORD		dwLoopY = 0, dwLoopX = 0;
		COLORREF	crPixel = 0;
		BYTE		byNewPixel = 0;