MacProgressCtrl.cpp
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- // MacProgressCtrl.cpp : implementation file
- //
- // CMacProgressCtrl class, version 1.0
- //
- // Copyright (c) 1999 Paul M. Meidinger (pmmeidinger@yahoo.com)
- //
- // Feel free to modifiy and/or distribute this file, but
- // do not remove this header.
- //
- // I would appreciate a notification of any bugs discovered or
- // improvements that could be made.
- //
- // This file is provided "as is" with no expressed or implied warranty.
- //
- // History:
- // PMM 12/21/1999 Initial implementation.
- #include "stdafx.h"
- #include "MacProgressCtrl.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- #define IDT_INDETERMINATE 100
- #define IND_BAND_WIDTH 20
- // Funtion prototypes.
- COLORREF LightenColor(const COLORREF crColor, BYTE byIncreaseVal);
- COLORREF DarkenColor(const COLORREF crColor, BYTE byReduceVal);
- //-------------------------------------------------------------------
- //
- COLORREF LightenColor(const COLORREF crColor, BYTE byIncreaseVal)
- //
- // Return Value: None.
- //
- // Parameters : crColor - References a COLORREF structure.
- // byReduceVal - The amount to reduce the RGB values by.
- //
- // Remarks : Lightens a color by increasing the RGB values by the given number.
- //
- {
- BYTE byRed = GetRValue(crColor);
- BYTE byGreen = GetGValue(crColor);
- BYTE byBlue = GetBValue(crColor);
- if ((byRed + byIncreaseVal) <= 255)
- byRed = BYTE(byRed + byIncreaseVal);
- if ((byGreen + byIncreaseVal) <= 255)
- byGreen = BYTE(byGreen + byIncreaseVal);
- if ((byBlue + byIncreaseVal) <= 255)
- byBlue = BYTE(byBlue + byIncreaseVal);
- return RGB(byRed, byGreen, byBlue);
- } // LightenColorref
- //-------------------------------------------------------------------
- //
- COLORREF DarkenColor(const COLORREF crColor, BYTE byReduceVal)
- //
- // Return Value: None.
- //
- // Parameters : crColor - References a COLORREF structure.
- // byReduceVal - The amount to reduce the RGB values by.
- //
- // Remarks : Darkens a color by reducing the RGB values by the given number.
- //
- {
- BYTE byRed = GetRValue(crColor);
- BYTE byGreen = GetGValue(crColor);
- BYTE byBlue = GetBValue(crColor);
- if (byRed >= byReduceVal)
- byRed = BYTE(byRed - byReduceVal);
- if (byGreen >= byReduceVal)
- byGreen = BYTE(byGreen - byReduceVal);
- if (byBlue >= byReduceVal)
- byBlue = BYTE(byBlue - byReduceVal);
- return RGB(byRed, byGreen, byBlue);
- } // DarkenColorref
- /////////////////////////////////////////////////////////////////////////////
- // CMacProgressCtrl
- //-------------------------------------------------------------------
- //
- CMacProgressCtrl::CMacProgressCtrl()
- //
- // Return Value: None.
- //
- // Parameters : None.
- //
- // Remarks : Standard constructor.
- //
- {
- m_bIndeterminate = FALSE;
- m_nIndOffset = 0;
- m_crColor = ::GetSysColor(COLOR_HIGHLIGHT);
- GetColors();
- CreatePens();
- } // CMacProgressCtrl
- //-------------------------------------------------------------------
- //
- CMacProgressCtrl::~CMacProgressCtrl()
- //
- // Return Value: None.
- //
- // Parameters : None.
- //
- // Remarks : None.
- //
- {
- DeletePens();
- } // ~CMacProgressCtrl
- BEGIN_MESSAGE_MAP(CMacProgressCtrl, CProgressCtrl)
- //{{AFX_MSG_MAP(CMacProgressCtrl)
- ON_WM_PAINT()
- ON_WM_TIMER()
- ON_WM_ERASEBKGND()
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CMacProgressCtrl message handlers
- //-------------------------------------------------------------------
- //
- void CMacProgressCtrl::OnPaint()
- //
- // Return Value: None.
- //
- // Parameters : None.
- //
- // Remarks : The framework calls this member function when Windows
- // or an application makes a request to repaint a portion
- // of an application抯 window.
- //
- {
- CPaintDC dcPaint(this); // device context for painting
- CRect rect, rectClient;
- GetClientRect(rectClient);
- rect = rectClient;
- BOOL bVertical = GetStyle() & PBS_VERTICAL;
- // Create a memory DC for drawing.
- CDC dc;
- dc.CreateCompatibleDC(&dcPaint);
- int nSavedDC = dc.SaveDC();
- CBitmap bmp;
- bmp.CreateCompatibleBitmap(&dcPaint, rect.Width(), rect.Height());
- CBitmap *pOldBmp = dc.SelectObject(&bmp);
- CBrush br1(m_crColorLightest);
- CBrush br2(::GetSysColor(COLOR_3DFACE));
- dc.FillRect(rect, &br2);
- int nLower, nUpper;
- GetRange(nLower, nUpper);
- // Determine the size of the bar and draw it.
- if (bVertical)
- {
- if (!m_bIndeterminate)
- rect.top = rect.bottom - int(((float)rect.Height() * float(GetPos() - nLower)) / float(nUpper - nLower));
- dc.FillRect(rect, &br1);
- DrawVerticalBar(&dc, rect);
- }
- else
- {
- if (!m_bIndeterminate)
- rect.right = int(((float)rect.Width() * float(GetPos() - nLower)) / float(nUpper - nLower));
- dc.FillRect(rect, &br1);
- DrawHorizontalBar(&dc, rect);
- }
- dcPaint.BitBlt(rectClient.left, rectClient.top, rectClient.Width(), rectClient.Height(),
- &dc, rectClient.left, rectClient.top, SRCCOPY);
- dc.SelectObject(pOldBmp);
- dc.RestoreDC(nSavedDC);
- dc.DeleteDC();
- } // OnPaint
- //-------------------------------------------------------------------
- //
- void CMacProgressCtrl::DrawHorizontalBar(CDC *pDC, const CRect rect)
- //
- // Return Value: None.
- //
- // Parameters : pDC - Specifies the device context object.
- // rect - Specifies the rectangle of the progess bar.
- //
- // Remarks : Draws a horizontal progress bar.
- //
- {
- if (!rect.Width())
- return;
- int nLeft = rect.left;
- int nTop = rect.top;
- int nBottom = rect.bottom;
- // Assume we're not drawing the indeterminate state.
- CPen *pOldPen = pDC->SelectObject(&m_penColorLight);
- if (m_bIndeterminate)
- {
- pOldPen = pDC->SelectObject(&m_penColor);
- int nNumBands = (rect.Width() / IND_BAND_WIDTH) + 2;
- int nHeight = rect.Height() + 1;
- int nAdjust = nLeft - IND_BAND_WIDTH + m_nIndOffset;
- int nXpos = 0;
- int nYpos1 = nTop + 1;
- int nYpos2 = nBottom - 2;
- for (int i = 0; i < nNumBands; i++)
- {
- nXpos = nAdjust + (i * IND_BAND_WIDTH);
- pDC->SelectObject(&m_penColorDarker);
- pDC->MoveTo(nXpos + 1, nTop);
- pDC->LineTo(nXpos + nHeight, nBottom);
- pDC->SelectObject(&m_penColorDark);
- pDC->MoveTo(nXpos + 2, nTop);
- pDC->LineTo(nXpos + nHeight + 1, nBottom);
- pDC->MoveTo(nXpos + 10, nTop);
- pDC->LineTo(nXpos + nHeight + 9, nBottom);
- pDC->SelectObject(&m_penColor);
- pDC->MoveTo(nXpos + 3, nTop);
- pDC->LineTo(nXpos + nHeight + 2, nBottom);
- pDC->MoveTo(nXpos + 9, nTop);
- pDC->LineTo(nXpos + nHeight + 8, nBottom);
- pDC->SelectObject(&m_penColorLight);
- pDC->MoveTo(nXpos + 4, nTop);
- pDC->LineTo(nXpos + nHeight + 3, nBottom);
- pDC->MoveTo(nXpos + 8, nTop);
- pDC->LineTo(nXpos + nHeight + 7, nBottom);
- pDC->SelectObject(&m_penColorLighter);
- pDC->MoveTo(nXpos + 5, nTop);
- pDC->LineTo(nXpos + nHeight + 4, nBottom);
- pDC->MoveTo(nXpos + 7, nTop);
- pDC->LineTo(nXpos + nHeight + 6, nBottom);
- } // for the number of bands
- } // if indeterminate
- else
- {
- int nRight = rect.right;
- pDC->MoveTo(nLeft + 2, nBottom - 4);
- pDC->LineTo(nRight - 2, nBottom - 4);
- pDC->MoveTo(nLeft + 2, nTop + 2);
- pDC->LineTo(nRight - 2, nTop + 2);
- pDC->SetPixel(nLeft + 1, nBottom - 3, m_crColorLight);
- pDC->SetPixel(nLeft + 1, nTop + 1, m_crColorLight);
- pDC->SelectObject(&m_penColorLighter);
- pDC->MoveTo(nLeft + 2, nBottom - 5);
- pDC->LineTo(nRight - 3, nBottom - 5);
- pDC->LineTo(nRight - 3, nTop + 3);
- pDC->LineTo(nLeft + 1, nTop + 3);
- pDC->SetPixel(nLeft + 1, nBottom - 4, m_crColorLighter);
- pDC->SetPixel(nLeft + 1, nTop + 2, m_crColorLighter);
- pDC->SelectObject(&m_penColor);
- pDC->MoveTo(nLeft, nBottom - 1);
- pDC->LineTo(nLeft, nTop);
- pDC->LineTo(nLeft + 2, nTop);
- pDC->SetPixel(nLeft + 1, nBottom - 2, m_crColor);
- pDC->MoveTo(nLeft + 2, nBottom - 3);
- pDC->LineTo(nRight - 2, nBottom - 3);
- pDC->MoveTo(nLeft + 2, nTop + 1);
- pDC->LineTo(nRight - 1, nTop + 1);
- pDC->SelectObject(&m_penColorDark);
- pDC->MoveTo(nLeft + 2, nBottom - 2);
- pDC->LineTo(nRight - 2, nBottom - 2);
- pDC->LineTo(nRight - 2, nTop + 1);
- pDC->MoveTo(nLeft + 2, nTop);
- pDC->LineTo(nRight, nTop);
- pDC->SetPixel(nLeft + 1, nBottom - 1, m_crColorDark);
- pDC->SelectObject(&m_penColorDarker);
- pDC->MoveTo(nLeft + 2, nBottom - 1);
- pDC->LineTo(nRight - 1, nBottom - 1);
- pDC->LineTo(nRight - 1, nTop);
- pDC->SelectObject(&m_penShadow);
- pDC->MoveTo(nRight, nTop);
- pDC->LineTo(nRight, nBottom);
- pDC->SelectObject(&m_penLiteShadow);
- pDC->MoveTo(nRight + 1, nTop);
- pDC->LineTo(nRight + 1, nBottom);
- } // if not indeterminate
- pDC->SelectObject(pOldPen);
- } // DrawHorizontalBar
- //-------------------------------------------------------------------
- //
- void CMacProgressCtrl::DrawVerticalBar(CDC *pDC, const CRect rect)
- //
- // Return Value: None.
- //
- // 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