btnst.cpp

《突破Visual C++.NET编程实例五十讲+源文件,初学者学习的好东东！

      // 白线
      pOldPen = pDC->SelectObject(&penBtnHiLight);
      pDC->MoveTo(itemRect.left, itemRect.bottom-1);
      pDC->LineTo(itemRect.left, itemRect.top);
      pDC->LineTo(itemRect.right, itemRect.top);
      // 亮灰线
      pDC->SelectObject(pen3DLight);
      pDC->MoveTo(itemRect.left+1, itemRect.bottom-1);
      pDC->LineTo(itemRect.left+1, itemRect.top+1);
      pDC->LineTo(itemRect.right, itemRect.top+1);
      // 黑线
      pDC->SelectObject(pen3DDKShadow);
      pDC->MoveTo(itemRect.left, itemRect.bottom-1);
      pDC->LineTo(itemRect.right-1, itemRect.bottom-1);
      pDC->LineTo(itemRect.right-1, itemRect.top-1);
      // 暗灰线
      pDC->SelectObject(penBtnShadow);
      pDC->MoveTo(itemRect.left+1, itemRect.bottom-2);
      pDC->LineTo(itemRect.right-2, itemRect.bottom-2);
      pDC->LineTo(itemRect.right-2, itemRect.top);
      //
      pDC->SelectObject(pOldPen);
    }
  }

  // 按钮标题
  CString sTitle;
  GetWindowText(sTitle);

  // 若不显示按钮标题
  if (m_bShowText == FALSE) sTitle.Empty();

  CRect captionRect = lpDIS->rcItem;

  // 绘制图标
  if (m_hIconIn != NULL)
  {
    DrawTheIcon(pDC, &sTitle, &lpDIS->rcItem, &captionRect, bIsPressed, bIsDisabled);
  }

  // 写按钮标题
  if (sTitle.IsEmpty() == FALSE)
  {
    if (bIsPressed)
      captionRect.OffsetRect(1, 1);
    
    // ONLY FOR DEBUG 
    //CBrush brBtnShadow(RGB(255, 0, 0));
    //pDC->FrameRect(&captionRect, &brBtnShadow);

#ifdef ST_USE_MEMDC
	// 获取对话框字体
    CFont *pCurrentFont = GetFont(); 
    CFont *pOldFont = pDC->SelectObject(pCurrentFont);
#endif
    if ((m_MouseOnButton == TRUE) || (bIsPressed)) 
	{
      pDC->SetTextColor(GetActiveFgColor());
      pDC->SetBkColor(GetActiveBgColor());
    } 
	else 
	{
      pDC->SetTextColor(GetInactiveFgColor());
      pDC->SetBkColor(GetInactiveBgColor());
    }
    // 文本居中显示
    CRect centerRect = captionRect;
    pDC->DrawText(sTitle, -1, captionRect, DT_SINGLELINE|DT_CALCRECT);
    captionRect.OffsetRect((centerRect.Width() - captionRect.Width())/2, (centerRect.Height() - captionRect.Height())/2);
	/* 
    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);
#ifdef ST_USE_MEMDC
    pDC->SelectObject(pOldFont);
#endif
  }

  if (m_bIsFlat == FALSE || (m_bIsFlat == TRUE && m_bDrawFlatFocus == TRUE))
  {
    // 绘制焦点矩形
    if (bIsFocused)
    {
      CRect focusRect = itemRect;
      focusRect.DeflateRect(3, 3);
      pDC->DrawFocusRect(&focusRect);
    }
  }
}


void CButtonST::DrawTheIcon(CDC* pDC, CString* title, RECT* rcItem, CRect* captionRect, BOOL IsPressed, BOOL IsDisabled)
{
  CRect iconRect = rcItem;

  switch (m_nAlign)
  {
    case ST_ALIGN_HORIZ:
         if (title->IsEmpty())
         {
           // 图标水平居中
           iconRect.left += ((iconRect.Width() - m_cxIcon)/2);
         }
         else
         {
           iconRect.left += 3;  
           captionRect->left += m_cxIcon + 3;
         }
         // 图标垂直居中
         iconRect.top += ((iconRect.Height() - m_cyIcon)/2);
         break;
    case ST_ALIGN_VERT:
         // 图标水平居中
         iconRect.left += ((iconRect.Width() - m_cxIcon)/2);
         if (title->IsEmpty())
         {
           // 图标垂直居中
           iconRect.top += ((iconRect.Height() - m_cyIcon)/2);           
         }
         else
         {
           captionRect->top += m_cyIcon;
         }
         break;
  }
    
  // 按钮按下时按下图标
  if (IsPressed) iconRect.OffsetRect(1, 1);

  pDC->DrawState(iconRect.TopLeft(), 
	               iconRect.Size(), 
				         (m_MouseOnButton == TRUE || IsPressed) ? m_hIconIn : m_hIconOut, 
				         (IsDisabled ? DSS_DISABLED : DSS_NORMAL), 
                 (CBrush*)NULL);
} 


void CButtonST::PreSubclassWindow() 
{
	UINT nBS;

	nBS = GetButtonStyle();

	// 检查是否为缺省（标准）按钮
	if (nBS & BS_DEFPUSHBUTTON) m_bIsDefault = TRUE;

	// 增加 BS_OWNERDRAW 风格
	SetButtonStyle(nBS | BS_OWNERDRAW);

	CButton::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::SetDefaultInactiveBgColor(BOOL bRepaint)
{
	m_crInactiveBg = ::GetSysColor(COLOR_BTNFACE); 
	if (bRepaint == TRUE) Invalidate();
} // End of SetDefaultInactiveBgColor


void CButtonST::SetInactiveBgColor(COLORREF crNew, BOOL bRepaint)
{
	m_crInactiveBg = crNew; 
	if (bRepaint == TRUE) Invalidate();
} // End of SetInactiveBgColor


const COLORREF CButtonST::GetInactiveBgColor()
{
	return m_crInactiveBg;
} // End of GetInactiveBgColor


void CButtonST::SetDefaultInactiveFgColor(BOOL bRepaint)
{
	m_crInactiveFg = ::GetSysColor(COLOR_BTNTEXT); 
	if (bRepaint == TRUE) Invalidate();
} // End of SetDefaultInactiveFgColor


void CButtonST::SetInactiveFgColor(COLORREF crNew, BOOL bRepaint)
{
	m_crInactiveFg = crNew; 
	if (bRepaint == TRUE) Invalidate();
} // End of SetInactiveFgColor


const COLORREF CButtonST::GetInactiveFgColor()
{
	return m_crInactiveFg;
}


void CButtonST::SetDefaultActiveBgColor(BOOL bRepaint)
{
	m_crActiveBg = ::GetSysColor(COLOR_BTNFACE); 
	if (bRepaint == TRUE) Invalidate();
} 

void CButtonST::SetActiveBgColor(COLORREF crNew, BOOL bRepaint)
{
	m_crActiveBg = crNew; 
	if (bRepaint == TRUE) Invalidate();
} 

const COLORREF CButtonST::GetActiveBgColor()
{
	return m_crActiveBg;
} 

void CButtonST::SetDefaultActiveFgColor(BOOL bRepaint)
{
	m_crActiveFg = ::GetSysColor(COLOR_BTNTEXT); 
	if (bRepaint == TRUE) Invalidate();
} 

void CButtonST::SetActiveFgColor(COLORREF crNew, BOOL bRepaint)
{
	m_crActiveFg = crNew; 
	if (bRepaint == TRUE) Invalidate();
} 

const COLORREF CButtonST::GetActiveFgColor()
{
	return m_crActiveFg;
} 

void CButtonST::SetFlatFocus(BOOL bDrawFlatFocus, BOOL bRepaint)
{
	m_bDrawFlatFocus = bDrawFlatFocus;
	
	// 重画按钮
	if (bRepaint == TRUE) Invalidate();
} 

BOOL CButtonST::GetFlatFocus()
{
	return m_bDrawFlatFocus;
} 

BOOL CButtonST::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
	// 使用指定光标
	if (m_hCursor != NULL)
	{
		::SetCursor(m_hCursor);
		return TRUE;
	}

	return CButton::OnSetCursor(pWnd, nHitTest, message);
} 


void CButtonST::SetTooltipText(CString* spText, BOOL bActivate)
{
	// 不接受空指针
	if (spText == NULL) return;

	// 初始化ToolTip
	InitToolTip();

	// 若没有定义工具提示，则增加
	if (m_ToolTip.GetToolCount() == 0)
	{
		CRect rectBtn; 
		GetClientRect(rectBtn);
		m_ToolTip.AddTool(this, (LPCTSTR)*spText, rectBtn, 1);
	}

	// 设置工具提示的文本
	m_ToolTip.UpdateTipText((LPCTSTR)*spText, this, 1);
	m_ToolTip.Activate(bActivate);
} // End of SetTooltipText


void CButtonST::SetTooltipText(int nId, BOOL bActivate)
{
	CString sText;

	// 导入字符串资源
	sText.LoadString(nId);
	// 若字符串资源不为空
	if (sText.IsEmpty() == FALSE) SetTooltipText(&sText, bActivate);
} // End of SetTooltipText


void CButtonST::ActivateTooltip(BOOL bActivate)
{
	// 若没有工具提示，则返回
	if (m_ToolTip.GetToolCount() == 0) return;

	// 激活工具提示
	m_ToolTip.Activate(bActivate);
} 
BOOL CButtonST::GetDefault()
{
	return m_bIsDefault;
} 
void CButtonST::DrawTransparent()
{
	m_bDrawTransparent = TRUE;
} 

void CButtonST::InitToolTip()
{
	if (m_ToolTip.m_hWnd == NULL)
	{
		// 创建工具提示控件
		m_ToolTip.Create(this);

		m_ToolTip.Activate(FALSE);
	}
} 


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);
	}

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


#undef ST_USE_MEMDC
#undef ST_LIKEIE