VC-LED数字显示程序

// StaticCounter.cpp : implementation file // #include "stdafx.h" #include "LEDScreen.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CLEDScreen //==================================================================== CLEDScreen::CLEDScreen():m_SymbolRect(0,0,0,0),m_MatrixRect(0,0,0,0) { symbDC = NULL; backDC = NULL; m_RightAligned = FALSE; m_ScrollPos = 0; m_recClient.left = 0; m_recClient.right = 0; m_Space = 0; m_Offset = 0; m_NotchWidth = 0; m_NotchLength = 0; // Set default background m_crBackground = RGB(255,0,255); //::GetSysColor(COLOR_BTNFACE); m_brBackground.CreateSolidBrush(m_crBackground); // Set default foreground m_crForeground = 0x0000FF00; //::GetSysColor(COLOR_BTNFACE); m_brForeground.CreateSolidBrush(m_crForeground); m_contents = _T(""); m_bSpecifiedFadeColour = false; m_bDrawFadedNotches = true; m_bGotMetrics = false; m_bDrawTransparent = false; } //==================================================================== CLEDScreen::~CLEDScreen() { if(symbDC) delete symbDC; if(backDC) delete backDC; } //==================================================================== void CLEDScreen::SetColourBackGround(COLORREF cr) { // Set new background color if (cr != 0xffffffff) m_crBackground = cr; else // Set default background color m_crBackground = ::GetSysColor(COLOR_BTNFACE); //backDC->m_crBackground = m_crBackground; m_brBackground.DeleteObject(); m_brBackground.CreateSolidBrush(m_crBackground); Update(); } //==================================================================== void CLEDScreen::SetColourForeGround(COLORREF cr) { // Set new foreground color if (cr != 0xffffffff) m_crForeground = cr; else // Set default foreground color m_crForeground = ::GetSysColor(COLOR_BTNTEXT); Update(); } //==================================================================== void CLEDScreen::SetColourFaded(COLORREF cr) { m_bSpecifiedFadeColour = true; m_crDimForeground = cr; Update(); } //==================================================================== BEGIN_MESSAGE_MAP(CLEDScreen, CStatic) //{{AFX_MSG_MAP(CLEDScreen) ON_WM_CTLCOLOR_REFLECT() ON_WM_PAINT() //}}AFX_MSG_MAP END_MESSAGE_MAP() //==================================================================== HBRUSH CLEDScreen::CtlColor(CDC* pDC, UINT nCtlColor) { pDC->SetTextColor(m_crForeground); pDC->SetBkColor(m_crBackground); return (HBRUSH)m_brBackground; // Return non-NULL brush - the parent's handler is not called } //==================================================================== void CLEDScreen::OnPaint() { GetClientRect(&m_recClient); CPaintDC dc(this); if (!backDC) { backDC = new CMemDC(&dc, m_recClient); RedrawBkCanvas(); } if(backDC) backDC->PaintTo(&dc, m_recClient); } //==================================================================== void CLEDScreen::DrawSymbol(CMemDC* pDC, TScreenSymbol aSymb, int nCol) { // ASSERT(pDC); CRect srcRect; GetMatrixSymbolRect(&srcRect, aSymb); pDC->BitBlt(nCol, m_FieldsWidth, srcRect.Width(), srcRect.Height(), symbDC, srcRect.left, srcRect.top, SRCCOPY); } //==================================================================== void CLEDScreen::SetDrawFaded(bool bState) { m_bDrawFadedNotches = bState; } //==================================================================== void CLEDScreen::SetDrawTransparent(bool bState) { m_bDrawTransparent = bState; } //==================================================================== void CLEDScreen::Update() { if (::IsWindow(m_hWnd)) { if (!m_ParentWnd) m_ParentWnd = GetParent(); // CWnd* pParent = GetParent(); CRect p_rect; GetWindowRect(p_rect); m_ParentWnd->ScreenToClient(p_rect); m_ParentWnd->InvalidateRect(p_rect, TRUE); Invalidate(FALSE); } } //==================================================================== /* void CLEDScreen::DisplayCurrentTime( CString strFormat ) { CTime tCurrent = CTime::GetCurrentTime(); m_contents = tCurrent.Format(strFormat); RedrawBkCanvas(); Update(); } */ //==================================================================== void CLEDScreen::Backspace() { m_contents.Delete(m_contents.GetLength()-1,1); if (m_ScrollPos > 0) { m_ScrollPos--; RedrawBkCanvas(); Update(); } else { RedrawBkCanvas(); if (m_RightAligned) UpdatePos(m_Capacity - m_contents.GetLength() - 1, m_contents.GetLength() + 1); else UpdatePos(m_contents.GetLength()); } } //==================================================================== void CLEDScreen::Clear() { int ChangedCount = (m_contents.GetLength() < m_Capacity) ? m_contents.GetLength() : m_Capacity; m_contents = _T(""); m_ScrollPos = 0; RedrawBkCanvas(); if (m_RightAligned) UpdatePos(m_Capacity - ChangedCount + 1, ChangedCount); else UpdatePos(0, ChangedCount); } //==================================================================== void CLEDScreen::Append(CString value) { // if (m_contents.GetLength() >= m_Capacity) return; //optional limitation m_contents += value; RedrawBkCanvas(); if (m_RightAligned) UpdatePos(m_Capacity - m_contents.GetLength(), m_contents.GetLength()); else UpdatePos(m_contents.GetLength() - 1, value.GetLength()); } //==================================================================== BOOL CLEDScreen::IsEmpty() { return m_contents.IsEmpty(); } //==================================================================== int CLEDScreen::Count() { return m_contents.GetLength(); } //==================================================================== void CLEDScreen::SetSymbolParams(int aFieldsWidth, int nWidth, int sSpace, int sOffset) { this->GetClientRect(&m_recClient); m_SymbolRect.left = 0; m_SymbolRect.top = 0; m_SymbolRect.bottom = m_recClient.bottom - m_recClient.top - 2 * aFieldsWidth; m_FieldsWidth = aFieldsWidth; m_Space = sSpace; m_Offset = sOffset; m_NotchWidth = nWidth; m_NotchLength = (m_SymbolRect.bottom - 3 * nWidth - 4 * m_Space) / 2; m_SymbolRect.right = m_NotchLength + 2 * (m_NotchWidth + m_Space); m_SymbolRect.bottom = 2 * m_SymbolRect.right - m_NotchWidth; if (m_SymbolRect.right < 0) { m_SymbolRect.right = 0; m_SymbolRect.bottom = 0; } if (m_SymbolRect.right > 0) { m_MatrixRect.left = 0; m_MatrixRect.top = 0; m_MatrixRect.bottom = m_SymbolRect.bottom; m_MatrixRect.right = m_SymbolRect.right * MATRIX_CAPACITY; CPaintDC dc(this); if (backDC) delete backDC; backDC = new CMemDC(&dc, m_recClient); if (symbDC) delete symbDC; symbDC = new CMemDC(&dc, m_MatrixRect); RebuildStorage(); RedrawBkCanvas(); } } //==================================================================== void CLEDScreen::RebuildStorage() { ASSERT(backDC); ASSERT(symbDC); if (!backDC) return; symbDC->FillSolidRect(&m_MatrixRect, m_crBackground); if(m_bDrawFadedNotches) for (int i = 0; i < MATRIX_CAPACITY; ++i) { BuildMatrixSymbol(symbDC, i, ScreenSymbols[ss_8], m_crDimForeground); } for (int i = 0; i < SYMBOLS_COUNT; ++i) { BuildMatrixSymbol(symbDC, i, ScreenSymbols[i], m_crForeground); } } //==================================================================== void CLEDScreen::RedrawBkCanvas() { ASSERT(backDC); // ASSERT(symbDC); if (!backDC) return; backDC->m_crBackground = m_crBackground; backDC->m_bDrawTransparent = m_bDrawTransparent; CRect clip; backDC->GetClipBox(&clip); backDC->FillSolidRect(&m_recClient, m_crBackground); int nIndex; int nColPos = 0; int nSpace