Meter_gdi+_航空仪表虚拟控件_水平仪_MFC_climateh92_源码

// Meter.cpp : implementation file // #include "stdafx.h" #include "Meter.h" #include "math.h" #include "MemDC.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #define PT_NUM 50 ///////////////////////////////////////////////////////////////////////////// // CMeter CMeter::CMeter() { m_nStartAngleDeg = 225; m_nEndAngleDeg = 315; m_nTicks = 10; m_nSubTicks = 5; m_dMaxValue = 100.0; m_dMinValue = 0.0; m_dCurrentValue = 50.0; m_nScaleDecimals = 0; m_nValueDecimals = 1; m_colorNeedle = RGB(255, 0, 0); m_strUnits = _T("Heigt"); m_bColorTick = FALSE; // 颜色表格 m_colorTable[0] = RGB(255, 255, 0); m_colorTable[1] = RGB( 0, 255, 0); m_colorTable[2] = RGB(255, 0, 0); m_colorTable[3] = RGB(255,183, 34); m_colorTable[4] = RGB(255, 92, 93); } CMeter::~CMeter() { } BEGIN_MESSAGE_MAP(CMeter, CStatic) //{{AFX_MSG_MAP(CMeter) ON_WM_PAINT() ON_WM_SIZE() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMeter message handlers void CMeter::OnPaint() { CPaintDC dc(this); // device context for painting // 获得控件区域 GetClientRect (&m_rectCtrl); CMemDC memDC(&dc, &m_rectCtrl); // 选取圆盘边框半径 m_nRadiusFrame = max(m_rectCtrl.Height(), m_rectCtrl.Width())*9/21; // 获得仪表盘中心点 m_ptMeterCenter = m_rectCtrl.CenterPoint(); m_ptMeterCenter.y += m_nRadiusFrame/10; //绘制仪表盘 if(m_dcBackground.GetSafeHdc()== NULL|| (m_bitmapBackground.m_hObject == NULL)) { m_dcBackground.CreateCompatibleDC(&dc); m_bitmapBackground.CreateCompatibleBitmap(&dc, m_rectCtrl.Width(), m_rectCtrl.Height()) ; m_pBitmapOldBackground = m_dcBackground.SelectObject(&m_bitmapBackground) ; DrawMeterBackground(&m_dcBackground, m_rectCtrl); } memDC.BitBlt(0, 0, m_rectCtrl.Width(), m_rectCtrl.Height(), &m_dcBackground, 0, 0, SRCCOPY) ; // 绘制指针 DrawNeedle(&memDC); DrawNode(&memDC); DrawValue(&memDC); // Do not call CStatic::OnPaint() for painting messages } void CMeter::DrawMeterBackground(CDC *pDC, CRect &rect) { int nInnerRadius = m_nRadiusFrame*8/10; // 内圆弧半径 m_nCenterRadius = m_nRadiusFrame/20; // 中心园半径大小 int nFrame = m_nRadiusFrame/18; // 边框厚度 double dstepTickDeg = (360.0+m_nStartAngleDeg-m_nEndAngleDeg)/(m_nTicks*m_nSubTicks); // 刻度步进角度 int nSubTickR = nInnerRadius+(m_nRadiusFrame-2*nFrame-nInnerRadius)/2; double dDeg = (m_nStartAngleDeg+360.0-m_nEndAngleDeg)/(TABNUM*PT_NUM); CRect rectPanel,rectInnerPanel; CPen penDraw, *pPenOld; CFont *pFontOld; CBrush brushFill, *pBrushOld; POINT ptStart, ptEnd, ptInnerStart, ptInnerEnd; CPoint pointInner[BOUNDARY_POINTS], ptGroup1[PT_NUM*TABNUM+1], ptGroup2[PT_NUM*TABNUM+1]; CPoint ptRgn[PT_NUM*2+2]; CPoint pttemp; CString strtemp; double dRadPerDeg; double dTickAngleRad; double dTemp; int nRef = 0; int nTickAngle; int nHeight; // 字体大小 double dtempangle; // 计算起始角终止角弧度 dRadPerDeg = 4.0*atan(1.0)/180.0; m_dLeftAngleRad = (m_nStartAngleDeg-180.0)*dRadPerDeg; m_dRightAngleRad = (m_nEndAngleDeg-360.0)*dRadPerDeg; // 计算圆弧起始终止点及区域 ptStart.x = m_ptMeterCenter.x-(int)(m_nRadiusFrame*cos(m_dLeftAngleRad)); ptStart.y = m_ptMeterCenter.y+(int)(m_nRadiusFrame*sin(m_dLeftAngleRad)); ptEnd.x = m_ptMeterCenter.x+(int)(m_nRadiusFrame*cos(-m_dRightAngleRad)); ptEnd.y = m_ptMeterCenter.y+(int)(m_nRadiusFrame*sin(-m_dRightAngleRad)); rectPanel.SetRect(m_ptMeterCenter.x-m_nRadiusFrame, m_ptMeterCenter.y-m_nRadiusFrame, m_ptMeterCenter.x+m_nRadiusFrame, m_ptMeterCenter.y+m_nRadiusFrame); // 获取点的位置 for(int i=0; i<=PT_NUM*TABNUM; i++) { ptGroup1[i].x = m_ptMeterCenter.x + (int)((m_nRadiusFrame-nFrame)*cos((m_nStartAngleDeg-i*dDeg)*dRadPerDeg)); ptGroup1[i].y = m_ptMeterCenter.y - (int)((m_nRadiusFrame-nFrame)*sin((m_nStartAngleDeg-i*dDeg)*dRadPerDeg)); ptGroup2[i].x = m_ptMeterCenter.x + (int)(m_nRadiusFrame*8*cos((m_nStartAngleDeg-i*dDeg)*dRadPerDeg)/10); ptGroup2[i].y = m_ptMeterCenter.y - (int)(m_nRadiusFrame*8*sin((m_nStartAngleDeg-i*dDeg)*dRadPerDeg)/10); } // 获取系统颜色; m_colorWindow = GetSysColor(COLOR_WINDOW); m_colorButton = GetSysColor(COLOR_BTNFACE); m_colorShadow = GetSysColor(COLOR_BTNSHADOW); m_colorHighlight = GetSysColor(COLOR_BTNHIGHLIGHT); m_colorText = GetSysColor(COLOR_BTNTEXT); // 临时使用的颜色 COLORREF colorCaption, cEdge, cMiddle; cMiddle = RGB(255, 255, 255); cEdge = RGB(96, 96, 255); // 用按钮色绘制背景 brushFill.DeleteObject(); brushFill.CreateSolidBrush(m_colorButton); pBrushOld = pDC->SelectObject(&brushFill); pDC->Rectangle(rect); pDC->SelectObject(pBrushOld); // 绘制圆盘边框 for(int iOnBand=nFrame; iOnBand>0; iOnBand--) { penDraw.DeleteObject(); colorCaption = RGB((GetRValue(cEdge)-GetRValue(cMiddle))*((float)iOnBand)/nFrame+GetRValue(cMiddle), (GetGValue(cEdge)-GetGValue(cMiddle))*((float)iOnBand)/nFrame+GetGValue(cMiddle), (GetBValue(cEdge)-GetBValue(cMiddle))*((float)iOnBand)/nFrame+GetBValue(cMiddle)); penDraw.CreatePen(PS_SOLID, iOnBand*2, colorCaption); pPenOld = pDC->SelectObject(&penDraw); pDC->Arc(&rectPanel, ptEnd, ptStart); pDC->SelectObject(pPenOld); } // 绘制内圈 ptInnerStart.x = m_ptMeterCenter.x-(int)(nInnerRadius*cos(m_dLeftAngleRad)); ptInnerStart.y = m_ptMeterCenter.y+(int)(nInnerRadius*sin(m_dLeftAngleRad)); ptInnerEnd.x = m_ptMeterCenter.x+(int)(nInnerRadius*cos(-m_dRightAngleRad)); ptInnerEnd.y = m_ptMeterCenter.y+(int)(nInnerRadius*sin(-m_dRightAngleRad)); rectInnerPanel.SetRect(m_ptMeterCenter.x-nInnerRadius, m_ptMeterCenter.y-nInnerRadius, m_ptMeterCenter.x+nInnerRadius ,m_ptMeterCenter.y+nInnerRadius); penDraw.DeleteObject(); penDraw.CreatePen(PS_SOLID, 1, RGB(255,255,0)); pPenOld = pDC->SelectObject(&penDraw); pDC->Arc(&rectInnerPanel, ptInnerEnd, ptInnerStart); pDC->SelectObject(pPenOld); if(m_bColorTick) { // 绘制色彩刻度 for(i=0; i<TABNUM; i++) { //确定区域 for(int j=0; j<=PT_NUM; j++) { ptRgn[j] = ptGroup1[i*PT_NUM+j]; ptRgn[2*PT_NUM+1-j] = ptGroup2[i*PT_NUM+j]; } brushFill.DeleteObject(); brushFill.CreateSolidBrush(m_colorTable[i]); pBrushOld = pDC->SelectObject(&brushFill); penDraw.DeleteObject(); penDraw.CreatePen(PS_SOLID, 1, m_colorTable[i]); pPenOld = pDC->SelectObject(&penDraw); pDC->Polygon(ptRgn, 2*PT_NUM+2); pDC->SelectObject(pBrushOld); pDC->SelectObject(pPenOld); } } // 计算刻度点,避免不能整除引起较大误差*100 for(nTickAngle=m_nStartAngleDeg*100; nTickAngle>=(m_nEndAngleDeg-360)*100; nTickAngle-=(int)(dstepTickDeg*100)) { // 转换成弧度 dTickAngleRad = (double)nTickAngle/100*dRadPerDeg; // 确定外圈坐标 // 确定x坐标 dTemp = m_ptMeterCenter.x + (m_nRadiusFrame-2*nFrame)*cos(dTickAngleRad); m_pointBoundary[nRef].x = ROUND(dTemp); // 确定y坐标 dTemp = m_ptMeterCenter.y - (m_nRadiusFrame-2*nFrame)*sin(dTickAngleRad); m_pointBoundary[nRef].y = ROUND(dTemp); // 确定刻度点(主刻度和子刻度) //主刻度及文本标注点 if(nRef%m_nSubTicks == 0) { dTemp = m_ptMeterCenter.x + nInnerRadius*cos(dTickAngleRad); pointInner[nRef].x = ROUND(dTemp); dTemp = m_ptMeterCenter.y - nInnerRadius*sin(dTickAngleRad); pointInner[nRef].y = ROUND(dTemp); } // 子刻度 else { dTemp = m_ptMeterCenter.x + nSubTickR*cos(dTickAngleRad); pointInner[nRef].x = ROUND(dTemp); dTemp = m_ptMeterCenter.y - nSubTickR*sin(dTickAngleRad); pointInner[nRef].y = ROUND(dTemp); } nRef++ ; } // 多边形区域 m_rgnBoundary.DeleteObject() ; m_rgnBoundary.CreatePolygonRgn(m_pointBoundary, nRef, ALTERNATE); m_rectValue.top = m_ptMeterCenter.y + m_nRadiusFrame/5;