QT 实时波形 EcgDemo.rar

/** * @file mainwindow.cpp * @brief 主窗口 */ #include <QDebug> #include <QFileDialog> #include <QDateTime> #include <QPainter> #include <QString> #include <QFile> #include "mainwindow.h" #include "ui_mainwindow.h" #include "readthread.h" #include "common.h" /** * @brief 19 寸 1080P 显示器点距为 0.21375mm/dot * @todo 其他显示器未处理 TODO (在VC中只有TODO前面只有空格、斜杠或者*才计入列表, QtCreator只要单列就可以计入列表) * @note 演示 IDE 与输出文档同时能适应TODO列表 */ const int VIEW_DOT = 21375; /// 构造函数 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); m_LastPosX = 0; m_WaveTimer = NULL; m_DemoThread = NULL; setFocusPolicy(Qt::ClickFocus); setAttribute(Qt::WA_DeleteOnClose, true); ui->paintWave->setGeometry(QRect(10, 50, this->width()- 20, this->height()- 50- 40)); QPalette pal(ui->paintWave->palette()); //设置背景黑色 pal.setColor(QPalette::Background, Qt::black); ui->paintWave->setAutoFillBackground(true); ui->paintWave->setPalette(pal); ui->cbxGain->setCurrentIndex(m_Gain); ui->cbxSpeed->setCurrentIndex(m_Speed); ClearEcgData(); ui->paintWave->installEventFilter(this); } /// 构释函数 MainWindow::~MainWindow() { if(m_WaveTimer) { m_WaveTimer->stop(); delete m_WaveTimer; } delete ui; } /** * @brief 将 Ecg 数据放入缓冲区 * @param[in] Data 数据指针 * @param[in] Count 数据长度(单位：采样点；4通道，第4通道为起搏器信号) */ void MainWindow::PutEcgBuff(const short int *Data, const int Count) { int m, n; const int STEP = sizeof(m_EcgData[0])/sizeof(m_EcgData[0][0]); for(m=0; m<Count; m++) { for(n=0; n<STEP; n++) { m_EcgData[m_EcgPutPos][n] = Data[STEP* m+ n]; } m_EcgPutPos++; m_EcgPutPos %= MAX_ECG_BUFF_LEN; } } /** * @brief 获取 Ecg 数据来画图 * @param[out] Data 数据指针 * @param[in] Count 数据长度(单位：采样点；4通道，第4通道为起搏器信号) * @attention 直接获取数据进行画图，没有使用双缓冲处理 * @note 目前画图的针对的是 19 寸 1080P 显示器 * @bug 切换增益时可能引起波形不连续 */ int MainWindow::DrawEcgData() { int m, n, stepX, viewY, len; const int STEP = sizeof(m_EcgData[0])/sizeof(m_EcgData[0][0]); len = GetEcgCount(); //OUT_RUNLOG("%d", len); switch(m_Speed) // 速度 { case 0: default: stepX = 12; break; case 1: stepX = 6; break; case 2: stepX = 3; break; } switch(m_Gain) // 增益 { case 0: viewY = 25; break; case 1: viewY = 50; break; case 2: default: viewY = 100; break; case 3: viewY = 200; break; case 4: viewY = 400; break; } len -= (len% 12); if(len >= 12) { short int minEcg[MAX_DATA_CHANNEL], maxEcg[MAX_DATA_CHANNEL]; if(m_FirstDraw) { m_LastData[0] = m_EcgData[m_EcgGetPos][0]; m_LastData[1] = m_EcgData[m_EcgGetPos][1]; m_LastData[2] = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]; m_LastData[3] = 0- (m_EcgData[m_EcgGetPos][0]+ m_EcgData[m_EcgGetPos][1])/ 2; m_LastData[4] = m_EcgData[m_EcgGetPos][0]- m_EcgData[m_EcgGetPos][1]/ 2; m_LastData[5] = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]/ 2; m_LastData[6] = m_EcgData[m_EcgGetPos][2]; } for(m=0; m<len; m+=stepX) { for(n=0; n<MAX_DATA_CHANNEL; n++) { minEcg[n] = m_LastData[n]; maxEcg[n] = m_LastData[n]; } for(n=0; n<stepX; n++) { int temp; temp = m_EcgData[m_EcgGetPos][0]; // I if(minEcg[0] > temp) minEcg[0] = temp; if(maxEcg[0] < temp) maxEcg[0] = temp; temp = m_EcgData[m_EcgGetPos][1]; // II if(minEcg[1] > temp) minEcg[1] = temp; if(maxEcg[1] < temp) maxEcg[1] = temp; temp = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]; // III=II-I if(minEcg[2] > temp) minEcg[2] = temp; if(maxEcg[2] < temp) maxEcg[2] = temp; temp = 0- (m_EcgData[m_EcgGetPos][1]+ m_EcgData[m_EcgGetPos][0])/ 2; // aVR=0-(I+II)/2 if(minEcg[3] > temp) minEcg[3] = temp; if(maxEcg[3] < temp) maxEcg[3] = temp; temp = m_EcgData[m_EcgGetPos][0]- m_EcgData[m_EcgGetPos][1]/ 2; // aVL=I-II/2 if(minEcg[4] > temp) minEcg[4] = temp; if(maxEcg[4] < temp) maxEcg[4] = temp; temp = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]/ 2; // aVF=II-I/2 if(minEcg[5] > temp) minEcg[5] = temp; if(maxEcg[5] < temp) maxEcg[5] = temp; temp = m_EcgData[m_EcgGetPos][2]; // V if(minEcg[6] > temp) minEcg[6] = temp; if(maxEcg[6] < temp) maxEcg[6] = temp; if((stepX- 1) == n) { m_LastData[0] = m_EcgData[m_EcgGetPos][0]; // I m_LastData[1] = m_EcgData[m_EcgGetPos][1]; // II m_LastData[2] = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]; // III=II-I m_LastData[3] = 0- (m_EcgData[m_EcgGetPos][1]+ m_EcgData[m_EcgGetPos][0])/ 2; // aVR=0-(I+II)/2 m_LastData[4] = m_EcgData[m_EcgGetPos][0]- m_EcgData[m_EcgGetPos][1]/ 2; // aVL=I-II/2 m_LastData[5] = m_EcgData[m_EcgGetPos][1]- m_EcgData[m_EcgGetPos][0]/ 2; // aVF=II-I/2 m_LastData[6] = m_EcgData[m_EcgGetPos][2]; // V } m_EcgGetPos++; m_EcgGetPos %= MAX_ECG_BUFF_LEN; } int stepY = ui->paintWave->height()/ 14- 2; for(n=0; n<MAX_DATA_CHANNEL; n++) { minEcg[n] = minEcg[n]* viewY* 29/ VIEW_DOT/ 2; maxEcg[n] = maxEcg[n]* viewY* 29/ VIEW_DOT/ 2; #if 0 /// 是否限制波形超出通道范围 if(minEcg[n] < 0- stepY- 2) minEcg[n] = 0- stepY- 2; if(minEcg[n] > stepY- 2) minEcg[n] = stepY- 2; if(maxEcg[n] < 0- stepY- 2) maxEcg[n] = 0- stepY- 2; if(maxEcg[n] > stepY- 2) maxEcg[n] = stepY- 2; #endif minEcg[n] = (n* 2+ 1)* (stepY+ 2)- minEcg[n]; maxEcg[n] = (n* 2+ 1)* (stepY+ 2)- maxEcg[n]; m_PaintLine[n].append(QLine(QPoint(m_LastPosX, minEcg[n]), QPoint(m_LastPosX, maxEcg[n]))); } m_LastPosX++; m_LastPosX %= ui->paintWave->width(); m_FirstDraw = false; //m_DrawCount++; } if(m_PaintLine[0].count() > ui->paintWave->width()- CLEAR_WIDTH) { int eraseCount = m_PaintLine[0].count()- (ui->paintWave->width()- CLEAR_WIDTH); for(n=0; n<MAX_DATA_CHANNEL; n++) m_PaintLine[n].erase(m_PaintLine[n].begin(), m_PaintLine[n].begin()+ eraseCount); } // 检测放入数据数量，与已经获取的数据（非画点个数）进行比较 m_DrawCount += len; int putCount = 0; if(m_DemoThread) putCoun