macprogressctrl.cpp

vc编译的酒店管理系统

// Parameters	:	pDC - Specifies the device context object.
//						rect - Specifies the rectangle of the progess bar.
//
// Remarks		:	Draws a vertical progress bar.
//
{
	int nHeight = rect.Height();
	if (!nHeight)
		return;

	int nLeft = rect.left;
	int nTop = rect.top;
	int nRight = rect.right;
	int nBottom = rect.bottom;

	CPen *pOldPen = pDC->SelectObject(&m_penColor);

	if (m_bIndeterminate)
	{
		int nNumBands = (nHeight / IND_BAND_WIDTH) + 2;
		int nHeight = rect.Width() + 1;

		int nAdjust = nBottom - m_nIndOffset;
		int nXpos1 = nLeft;
		int nXpos2 = nRight + 1;
		int nYpos = nTop + 1;

		for (int i = 0; i < nNumBands; i++)
		{
			nYpos = nAdjust - (i * IND_BAND_WIDTH);

			pDC->SelectObject(&m_penColorDarker);
			pDC->MoveTo(nXpos1, nYpos);
			pDC->LineTo(nXpos2, nYpos + nHeight);

			pDC->SelectObject(&m_penColorDark);
			pDC->MoveTo(nXpos1, nYpos + 1);
			pDC->LineTo(nXpos2, nYpos + nHeight + 1);
			pDC->MoveTo(nXpos1, nYpos + 9);
			pDC->LineTo(nXpos2, nYpos + nHeight + 9);

			pDC->SelectObject(&m_penColor);
			pDC->MoveTo(nXpos1, nYpos + 2);
			pDC->LineTo(nXpos2, nYpos + nHeight + 2);
			pDC->MoveTo(nXpos1, nYpos + 8);
			pDC->LineTo(nXpos2, nYpos + nHeight + 8);

			pDC->SelectObject(&m_penColorLight);
			pDC->MoveTo(nXpos1, nYpos + 3);
			pDC->LineTo(nXpos2, nYpos + nHeight + 3);
			pDC->MoveTo(nXpos1, nYpos + 7);
			pDC->LineTo(nXpos2, nYpos + nHeight + 7);

			pDC->SelectObject(&m_penColorLighter);
			pDC->MoveTo(nXpos1, nYpos + 4);
			pDC->LineTo(nXpos2, nYpos + nHeight + 4);
			pDC->MoveTo(nXpos1, nYpos + 6);
			pDC->LineTo(nXpos2, nYpos + nHeight + 6);
		}	// for the number of bands
	}	// if indeterminate
	else
	{
		if (nHeight > 3)
		{
			pDC->MoveTo(nLeft, nTop + 1);
			pDC->LineTo(nLeft, nTop);
			pDC->LineTo(nRight, nTop);
			pDC->MoveTo(nLeft + 1, nBottom - 2);
			pDC->LineTo(nLeft + 1, nTop + 1);
			pDC->MoveTo(nRight - 3, nBottom - 3);
			pDC->LineTo(nRight - 3, nTop + 1);
			pDC->SetPixel(nRight - 2, nTop + 1, m_crColor);

			pDC->SelectObject(&m_penColorLight);
			pDC->MoveTo(nLeft + 2, nBottom - 3);
			pDC->LineTo(nLeft + 2, nTop + 1);
			pDC->MoveTo(nRight - 4, nBottom - 3);
			pDC->LineTo(nRight - 4, nTop + 1);
			pDC->SetPixel(nLeft + 1, nTop + 1, m_crColorLight);
			pDC->SetPixel(nRight - 3, nTop + 1, m_crColorLight);
			
			pDC->SelectObject(&m_penColorLighter);
			pDC->MoveTo(nLeft + 3, nBottom - 3);
			pDC->LineTo(nLeft + 3, nTop + 1);
			pDC->MoveTo(nRight - 5, nBottom - 3);
			pDC->LineTo(nRight - 5, nTop + 1);
			pDC->SetPixel(nLeft + 2, nTop + 1, m_crColorLighter);
			pDC->SetPixel(nRight - 4, nTop + 1, m_crColorLighter);

			pDC->SelectObject(&m_penColorDark);
			pDC->MoveTo(nLeft, nBottom - 1);
			pDC->LineTo(nLeft, nTop + 1);
			pDC->MoveTo(nLeft + 2, nBottom - 2);
			pDC->LineTo(nRight - 2, nBottom - 2);
			pDC->LineTo(nRight - 2, nTop + 1);
			pDC->SetPixel(nRight - 1, nTop + 1, m_crColorDark);

			pDC->SelectObject(&m_penColorDarker);
			pDC->MoveTo(nLeft + 1, nBottom - 1);
			pDC->LineTo(nRight - 1, nBottom - 1);
			pDC->LineTo(nRight - 1, nTop + 1);
		}
		else
		{
			CBrush br(m_crColor);
			CBrush *pOldBrush = pDC->SelectObject(&br);
			pDC->SelectObject(&m_penColorDark);
			pDC->Rectangle(rect);
			pDC->SelectObject(pOldBrush);
		}
	}	// if not indeterminate

	pDC->SelectObject(pOldPen);
}	// DrawVerticalBar

//-------------------------------------------------------------------
//
BOOL CMacProgressCtrl::OnEraseBkgnd(CDC* pDC) 
//
// Return Value:	Nonzero if it erases the background; otherwise 0.
//
// Parameters	:	pDC - Specifies the device-context object.
//
// Remarks		:	The framework calls this member function when the 
//						CWnd object background needs erasing (for example, 
//						when resized). It is called to prepare an invalidated 
//						region for painting.
//
{
		return TRUE;
}	// OnEraseBkgnd

//-------------------------------------------------------------------
//
void CMacProgressCtrl::GetColors()
//
// Return Value:	None.
//
// Parameters	:	None.
//
// Remarks		:	Calculates the lighter and darker colors, as well as 
//						the shadow colors.
//
{
	m_crColorLight = LightenColor(m_crColor, 51);
	m_crColorLighter = LightenColor(m_crColorLight, 51);
	m_crColorLightest = LightenColor(m_crColorLighter, 51);
	m_crColorDark = DarkenColor(m_crColor, 51);
	m_crColorDarker = DarkenColor(m_crColorDark, 51);
	m_crDkShadow = ::GetSysColor(COLOR_3DDKSHADOW);
	m_crLiteShadow = ::GetSysColor(COLOR_3DSHADOW);

	// Get a color halfway between COLOR_3DDKSHADOW and COLOR_3DSHADOW
	BYTE byRed3DDkShadow = GetRValue(m_crDkShadow);
	BYTE byRed3DLiteShadow = GetRValue(m_crLiteShadow);
	BYTE byGreen3DDkShadow = GetGValue(m_crDkShadow);
	BYTE byGreen3DLiteShadow = GetGValue(m_crLiteShadow);
	BYTE byBlue3DDkShadow = GetBValue(m_crDkShadow);
	BYTE byBlue3DLiteShadow = GetBValue(m_crLiteShadow);

	m_crShadow = RGB(byRed3DLiteShadow + ((byRed3DDkShadow - byRed3DLiteShadow) >> 1),
						  byGreen3DLiteShadow + ((byGreen3DDkShadow - byGreen3DLiteShadow) >> 1),
						  byBlue3DLiteShadow + ((byBlue3DDkShadow - byBlue3DLiteShadow) >> 1));
}	// GetColors

//-------------------------------------------------------------------
//
void CMacProgressCtrl::SetColor(COLORREF crColor)
//
// Return Value:	None.
//
// Parameters	:	crColor - New color.
//
// Remarks		:	Sets the progress	bar control's color. The lighter
//						darker colors are recalculated, and the pens recreated.
//
{
	m_crColor = crColor;
	GetColors();
	CreatePens();
	RedrawWindow();
}	// SetColor

//-------------------------------------------------------------------
//
COLORREF CMacProgressCtrl::GetColor()
//
// Return Value:	The current color.
//
// Parameters	:	None.
//
// Remarks		:	Returns the progress bar control's current color.
//
{
	return m_crColor;
}	// GetColor

//-------------------------------------------------------------------
//
void CMacProgressCtrl::CreatePens()
//
// Return Value:	None.
//
// Parameters	:	None.
//
// Remarks		:	Deletes the pen objects, if necessary, and creates them.
//
{
	DeletePens();

	m_penColorLight.CreatePen(PS_SOLID, 1, m_crColorLight);
	m_penColorLighter.CreatePen(PS_SOLID, 1, m_crColorLighter);
	m_penColor.CreatePen(PS_SOLID, 1, m_crColor);
	m_penColorDark.CreatePen(PS_SOLID, 1, m_crColorDark);
	m_penColorDarker.CreatePen(PS_SOLID, 1, m_crColorDarker);
	m_penDkShadow.CreatePen(PS_SOLID, 1, m_crDkShadow);
	m_penShadow.CreatePen(PS_SOLID, 1, m_crShadow);
	m_penLiteShadow.CreatePen(PS_SOLID, 1, m_crLiteShadow);
}	// CreatePens

//-------------------------------------------------------------------
//
void CMacProgressCtrl::DeletePens()
//
// Return Value:	None.
//
// Parameters	:	None.
//
// Remarks		:	Deletes the pen objects.
//
{
	if (m_penColorLight.m_hObject)
		m_penColorLight.DeleteObject();
	if (m_penColorLighter.m_hObject)
		m_penColorLighter.DeleteObject();
	if (m_penColor.m_hObject)
		m_penColor.DeleteObject();
	if (m_penColorDark.m_hObject)
		m_penColorDark.DeleteObject();
	if (m_penColorDarker.m_hObject)
		m_penColorDarker.DeleteObject();
	if (m_penDkShadow.m_hObject)
		m_penDkShadow.DeleteObject();
	if (m_penShadow.m_hObject)
		m_penShadow.DeleteObject();
	if (m_penLiteShadow.m_hObject)
		m_penLiteShadow.DeleteObject();
}	// DeletePens

//-------------------------------------------------------------------
//
void CMacProgressCtrl::SetIndeterminate(BOOL bIndeterminate)
//
// Return Value:	None.
//
// Parameters	:	bIndeterminate - Specifies the indeterminate state.
//
// Remarks		:	Sets the indeterminate flag.
//
{
	m_bIndeterminate = bIndeterminate;

	if (m_bIndeterminate)
	{
		CRect rect;
		GetClientRect(rect);
		m_nIndOffset = 0;

		RedrawWindow();
		SetTimer(IDT_INDETERMINATE, 25, NULL);
	}
	else
	{
		KillTimer(IDT_INDETERMINATE);
		RedrawWindow();
	}
}	// SetIndeterminate

//-------------------------------------------------------------------
//
BOOL CMacProgressCtrl::GetIndeterminate()
//
// Return Value:	m_bIndeterminate.
//
// Parameters	:	None.
//
// Remarks		:	Returns m_bIndeterminate.
//
{
	return m_bIndeterminate;
}	// GetIndeterminate

//-------------------------------------------------------------------
//
void CMacProgressCtrl::OnTimer(UINT nIDEvent) 
//
// Return Value:	None.
//
// Parameters	:	nIDEvent - Specifies the identifier of the timer.
//
// Remarks		:	The framework calls this member function after each 
//						interval specified in the SetTimer member function used 
//						to install a timer.
//
{
	// Increment the indeterminate bar offset and redraw the window.
	if (nIDEvent == IDT_INDETERMINATE)
	{
		KillTimer(nIDEvent);

		if (++m_nIndOffset > IND_BAND_WIDTH - 1)
			m_nIndOffset = 0;
		RedrawWindow();

		SetTimer(IDT_INDETERMINATE, 25, NULL);
	}
}	// OnTimer