btnst.cpp

一个fir滤波器Designer的例子

#include "stdafx.h"
#include "BtnST.h"

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

/////////////////////////////////////////////////////////////////////////////
// CButtonST

CButtonST::CButtonST()
{
	m_bMouseOnButton = FALSE;

	FreeResources(FALSE);

	// By default icon is aligned horizontally
	m_nAlign = ST_ALIGN_HORIZ; 
  
	// By default show the text button
	m_bShowText = TRUE; 
  
	// By default, for "flat" button, don't draw the focus rect
	m_bDrawFlatFocus = FALSE;

	// By default the button is not the default button
	m_bIsDefault = FALSE;

	// By default the button is not a checkbox
	m_bIsCheckBox = FALSE;
	m_nCheck = 0;

	// Set default colors
	SetDefaultColors(FALSE);

	// No tooltip created
	m_ToolTip.m_hWnd = NULL;

	// Do not draw as a transparent button
	m_bDrawTransparent = FALSE;
	m_pbmpOldBk = NULL;

	// No URL defined
	::ZeroMemory(&m_szURL, sizeof(m_szURL));

	// No cursor defined
	m_hCursor = NULL;	// Fix by [e-mail]

	// No autorepeat
	m_bAutoRepeat = FALSE;
	m_hWndAutoRepeat = NULL;
	m_nMsgAutoRepeat = WM_APP;
	m_dwPeriodAutoRepeat = 100;
} // End of CButtonST


CButtonST::~CButtonST()
{
	// Restore old bitmap (if any)
	if (m_dcBk.m_hDC != NULL && m_pbmpOldBk != NULL)
	{
		m_dcBk.SelectObject(m_pbmpOldBk);
	}

	FreeResources();

	// Destroy the cursor (if any)
	if (m_hCursor != NULL) ::DestroyCursor(m_hCursor);
} // End of ~CButtonST


BEGIN_MESSAGE_MAP(CButtonST, CButton)
    //{{AFX_MSG_MAP(CButtonST)
	ON_WM_CAPTURECHANGED()
	ON_WM_SETCURSOR()
	ON_WM_KILLFOCUS()
	ON_WM_MOUSEMOVE()
	ON_WM_SYSCOLORCHANGE()
	ON_CONTROL_REFLECT_EX(BN_CLICKED, OnClicked)
	ON_WM_ACTIVATE()
	ON_WM_ENABLE()
	ON_WM_CANCELMODE()
	ON_WM_CTLCOLOR_REFLECT()
	ON_WM_LBUTTONDOWN()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


DWORD CButtonST::SetIcon(int nIconInId, int nIconOutId)
{
	HICON		hIconIn;
	HICON		hIconOut;
	HINSTANCE	hInstResource;

	// Find correct resource handle
	hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nIconInId), RT_GROUP_ICON);

	// Set icon when the mouse is IN the button
	hIconIn = (HICON)::LoadImage(hInstResource, MAKEINTRESOURCE(nIconInId), IMAGE_ICON, 0, 0, 0);
  	// Set icon when the mouse is OUT the button
	hIconOut = (HICON)::LoadImage(hInstResource, MAKEINTRESOURCE(nIconOutId), IMAGE_ICON, 0, 0, 0);

	return SetIcon(hIconIn, hIconOut);
} // End of SetIcon

DWORD CButtonST::SetIcon(HICON hIconIn, HICON hIconOut)
{
	BOOL		bRetValue;
	ICONINFO	ii;

	// Free any loaded resource
	FreeResources();

	if (hIconIn != NULL)
	{
		m_csIcons[0].hIcon = hIconIn;

		// Get icon dimension
		ZeroMemory(&ii, sizeof(ICONINFO));
		bRetValue = ::GetIconInfo(hIconIn, &ii);
		if (bRetValue == FALSE)
		{
			FreeResources();
			return BTNST_INVALIDRESOURCE;
		} // if

		m_csIcons[0].dwWidth	= (DWORD)(ii.xHotspot * 2);
		m_csIcons[0].dwHeight	= (DWORD)(ii.yHotspot * 2);
		::DeleteObject(ii.hbmMask);
		::DeleteObject(ii.hbmColor);

		if (hIconOut != NULL)
		{
			m_csIcons[1].hIcon = hIconOut;

			// Get icon dimension
			ZeroMemory(&ii, sizeof(ICONINFO));
			bRetValue = ::GetIconInfo(hIconOut, &ii);
			if (bRetValue == FALSE)
			{
				FreeResources();
				return BTNST_INVALIDRESOURCE;
			} // if

			m_csIcons[1].dwWidth	= (DWORD)(ii.xHotspot * 2);
			m_csIcons[1].dwHeight	= (DWORD)(ii.yHotspot * 2);
			::DeleteObject(ii.hbmMask);
			::DeleteObject(ii.hbmColor);
		} // if
	} // if

	RedrawWindow();

	return BTNST_OK;
} // End of SetIcon

BOOL CButtonST::SetBtnCursor(int nCursorId)
{
	HINSTANCE hInstResource;
	// Destroy any previous cursor
	if (m_hCursor != NULL) ::DestroyCursor(m_hCursor);
	m_hCursor = NULL;

	// If we want a cursor
	if (nCursorId != NULL)
	{
		hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nCursorId),
											RT_GROUP_CURSOR);
		// Load icon resource
		m_hCursor = (HCURSOR)::LoadImage(hInstResource/*AfxGetApp()->m_hInstance*/, MAKEINTRESOURCE(nCursorId), IMAGE_CURSOR, 0, 0, 0);
		// If something wrong then return FALSE
		if (m_hCursor == NULL) return FALSE;
	}

	return TRUE;
} // End of SetBtnCursor

void CButtonST::SetAlign(int nAlign)
{
	switch (nAlign)
	{    
		case ST_ALIGN_HORIZ:
		case ST_ALIGN_HORIZ_RIGHT:
		case ST_ALIGN_VERT:
			m_nAlign = nAlign;
			break;
	}
	Invalidate();
} // End of SetAlign


int CButtonST::GetAlign()
{
	return m_nAlign;
} // End of GetAlign

void CButtonST::SetShowText(BOOL bShow)
{
	m_bShowText = bShow;
	Invalidate();
} // End of SetShowText


BOOL CButtonST::GetShowText()
{
	return m_bShowText;
} // End of GetShowText


void CButtonST::OnMouseMove(UINT nFlags, CPoint point)
{
	CWnd* pWnd;  // Finestra attiva
	CWnd* pParent; // Finestra che contiene il bottone

	CButton::OnMouseMove(nFlags, point);

	// If the mouse enter the button with the left button pressed
	// then do nothing
	if (nFlags & MK_LBUTTON && m_bMouseOnButton == FALSE) return;

	// If our button is not flat then do nothing
	pWnd = GetActiveWindow();
	pParent = GetOwner();

	if ((GetCapture() != this) && 
		(
#ifndef ST_LIKEIE
		pWnd != NULL && 
#endif
		pParent != NULL)) 
	{
		m_bMouseOnButton = TRUE;
		//SetFocus();	// Thanks Ralph!
		SetCapture();
		Invalidate();
	}
	else
	{
		/*
		CRect rc;
		GetClientRect(&rc);
		if (!rc.PtInRect(point))
		{
		*/

		POINT p2 = point;
		ClientToScreen(&p2);
		CWnd* wndUnderMouse = WindowFromPoint(p2);
//		if (wndUnderMouse != this)
		if (wndUnderMouse && wndUnderMouse->m_hWnd != this->m_hWnd)
		{
			// Redraw only if mouse goes out
			if (m_bMouseOnButton == TRUE)
			{
				m_bMouseOnButton = FALSE;
				Invalidate();
			}
			// If user is NOT pressing left button then release capture!
			if (!(nFlags & MK_LBUTTON)) ReleaseCapture();
		}
	}
} // End of OnMouseMove

void CButtonST::OnKillFocus(CWnd * pNewWnd)
{
	CButton::OnKillFocus(pNewWnd);

	CancelHover();
} // End of OnKillFocus

void CButtonST::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CButton::OnLButtonDown(nFlags, point);

	if (m_bAutoRepeat == TRUE)
	{
		MSG		csMsg;
		int		nButtonID;
		HWND	hWndParent;

		nButtonID = GetDlgCtrlID();
		hWndParent = GetParent()->GetSafeHwnd();
		while(PeekMessage(&csMsg, m_hWnd, WM_LBUTTONUP, WM_LBUTTONUP, PM_REMOVE) == FALSE)
		{
			::SendMessage(hWndParent, WM_COMMAND, MAKEWPARAM((WORD)nButtonID, BN_CLICKED), (LPARAM)m_hWnd);
			::Sleep(m_dwPeriodAutoRepeat);
		}
		SendMessage(WM_LBUTTONUP);
	} // if
} // End of OnLButtonDown

void CButtonST::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized) 
{
	CButton::OnActivate(nState, pWndOther, bMinimized);
	
	if (nState == WA_INACTIVE)	CancelHover();
} // End of OnActivate

void CButtonST::OnEnable(BOOL bEnable) 
{
	CButton::OnEnable(bEnable);
	
	if (bEnable == FALSE)	CancelHover();
} // End of OnEnable

void CButtonST::OnCancelMode() 
{
	CButton::OnCancelMode();
		
	CancelHover();
} // End of OnCancelMode

void CButtonST::OnCaptureChanged(CWnd *pWnd) 
{
	if (m_bMouseOnButton == TRUE)
	{
		ReleaseCapture();
		Invalidate();
	}

	// Call base message handler
	CButton::OnCaptureChanged(pWnd);
} // End of OnCaptureChanged


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

	BOOL	bIsPressed;

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

//	BOOL bIsPressed  = (lpDIS->itemState & ODS_SELECTED);
	BOOL bIsFocused  = (lpDIS->itemState & ODS_FOCUS);
	BOOL bIsDisabled = (lpDIS->itemState & ODS_DISABLED);

	CRect itemRect = lpDIS->rcItem;

	pDC->SetBkMode(TRANSPARENT);

	// Prepare draw... paint button's area with background color
	COLORREF bgColor;
	if ((m_bMouseOnButton == TRUE) || (bIsPressed))
		bgColor = m_crColors[BTNST_COLOR_BK_IN]; //GetActiveBgColor();
	else
		bgColor = m_crColors[BTNST_COLOR_BK_OUT]; //GetInactiveBgColor();

	CBrush br(bgColor);
	// Draw transparent?
	if (m_bDrawTransparent == TRUE)
	{
		PaintBk(pDC);
	}
	else
	{
		pDC->FillRect(&itemRect, &br);
	}

	// Disegno lo sfondo del bottone
	//CBrush br(GetSysColor(COLOR_BTNFACE));  
	//pDC->FillRect(&itemRect, &br);

	// Draw pressed button
	if (bIsPressed)
	{
		pDC->Draw3dRect(itemRect, ::GetSysColor(COLOR_BTNSHADOW), ::GetSysColor(COLOR_BTNHILIGHT));
	}
	else // ...else draw non pressed button
	{
		CPen penBtnHiLight(PS_SOLID, 0, GetSysColor(COLOR_BTNHILIGHT)); // White
		CPen pen3DLight(PS_SOLID, 0, GetSysColor(COLOR_3DLIGHT));       // Light gray
		CPen penBtnShadow(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));   // Dark gray
		CPen pen3DDKShadow(PS_SOLID, 0, GetSysColor(COLOR_3DDKSHADOW)); // Black

		//注释掉下句以总是画方框
		//if (m_bMouseOnButton == TRUE )
		{
			pDC->Draw3dRect(itemRect, ::GetSysColor(COLOR_BTNHILIGHT), ::GetSysColor(COLOR_BTNSHADOW));
		}
	}

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

	// If we don't want the title displayed
	if (m_bShowText == FALSE) sTitle.Empty();

	CRect captionRect = lpDIS->rcItem;

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

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

	// Write the button title (if any)
	if (sTitle.IsEmpty() == FALSE)
	{
		// Draw the button's title
		// If button is pressed then "press" title also
		if (bIsPressed && m_bIsCheckBox == FALSE)
			captionRect.OffsetRect(1, 1);
    
		// ONLY FOR DEBUG 
		// Evidenzia il rettangolo in cui verra' centrata la caption 
		//CBrush brBtnShadow(RGB(255, 0, 0));
		//pDC->FrameRect(&captionRect, &brBtnShadow);

		/*
		if ((m_bMouseOnButton == TRUE) || (bIsPressed)) 
		{
			pDC->SetTextColor(GetActiveFgColor());
			pDC->SetBkColor(GetActiveBgColor());
		} 
		else 
		{
			pDC->SetTextColor(GetInactiveFgColor());
			pDC->SetBkColor(GetInactiveBgColor());
		}
		*/
		// Center text
		CRect centerRect = captionRect;
		pDC->DrawText(sTitle, -1, captionRect, DT_WORDBREAK | DT_CENTER | DT_CALCRECT);
		captionRect.OffsetRect((centerRect.Width() - captionRect.Width())/2, (centerRect.Height() - captionRect.Height())/2);
		/* RFU
		captionRect.OffsetRect(0, (centerRect.Height() - captionRect.Height())/2);
		captionRect.OffsetRect((centerRect.Width() - captionRect.Width())-4, (centerRect.Height() - captionRect.Height())/2);
		*/

		pDC->SetBkMode(TRANSPARENT);
		/*
		pDC->DrawState(captionRect.TopLeft(), captionRect.Size(), (LPCTSTR)sTitle, (bIsDisabled ? DSS_DISABLED : DSS_NORMAL), 
						TRUE, 0, (CBrush*)NULL);
		*/
		if (bIsDisabled)
		{
			captionRect.OffsetRect(1, 1);
			pDC->SetTextColor(::GetSysColor(COLOR_3DHILIGHT));
			pDC->DrawText(sTitle, -1, captionRect, DT_WORDBREAK | DT_CENTER);
			captionRect.OffsetRect(-1, -1);
			pDC->SetTextColor(::GetSysColor(COLOR_3DSHADOW));
			pDC->DrawText(sTitle, -1, captionRect, DT_WORDBREAK | DT_CENTER);
		}
		else
		{
			if ((m_bMouseOnButton == TRUE) ||(bIsPressed)) 
			{
				pDC->SetTextColor(m_crColors[BTNST_COLOR_FG_IN]);
				pDC->SetBkColor(m_crColors[BTNST_COLOR_BK_IN]);
			} 
			else 
			{
				pDC->SetTextColor(m_crColors[BTNST_COLOR_FG_OUT]);
				pDC->SetBkColor(m_crColors[BTNST_COLOR_BK_OUT]);
			}
			pDC->DrawText(sTitle, -1, captionRect, DT_WORDBREAK | DT_CENTER);
		}
	}

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

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

	// Select the icon to use
	if (m_bIsCheckBox == TRUE)
	{
		if (bIsPressed == TRUE)
		{
			byIndex = 0;
		} // if
		else
		{
			if (m_csIcons[1].hIcon != NULL)
				byIndex = 1;
			else
				byIndex = 0;		// No icon Out available
		} // else
	} // if
	else
	{
		if (m_bMouseOnButton == TRUE || bIsPressed == TRUE)
		{
			byIndex = 0;
		} // if
		else
		{
			if (m_csIcons[1].hIcon != NULL)
				byIndex = 1;
			else
				byIndex = 0;		// No icon Out available
		} // else
	} // else

	CRect	rImage;
	PrepareImageRect(bHasTitle, rpItem, rpTitle, 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::PreSubclassWindow() 
{
	UINT nBS;

	nBS = GetButtonStyle();

	// Check if this is the default button
	if (nBS & BS_DEFPUSHBUTTON) m_bIsDefault = TRUE;

	// Check if this is a checkbox
	if (nBS & BS_CHECKBOX) m_bIsCheckBox = TRUE;

	// Add BS_OWNERDRAW style
	SetButtonStyle(nBS | BS_OWNERDRAW);

	CButton::PreSubclassWindow();
} // End of PreSubclassWindow


BOOL CButtonST::PreTranslateMessage(MSG* pMsg) 
{
	InitToolTip();
	m_ToolTip.RelayEvent(pMsg);
	
	return CButton::PreTranslateMessage(pMsg);
} // End of PreTranslateMessage


LRESULT CButtonST::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
	if (message == WM_LBUTTONDBLCLK)
	{
		message = WM_LBUTTONDOWN;
	}
	return CButton::DefWindowProc(message, wParam, lParam);
} // End of DefWindowProc

void CButtonST::SetFlatFocus(BOOL bDrawFlatFocus, BOOL bRepaint)
{
	m_bDrawFlatFocus = bDrawFlatFocus;
	
	// Repaint the button
	if (bRepaint == TRUE) Invalidate();
} // End of SetFlatFocus


BOOL CButtonST::GetFlatFocus()