qt_qcp_show/mainwidget.cpp

#include "mainwidget.h"
#include "ui_mainwidget.h"
#include <QtCore>
#include "mainconfig.h"

MainWidget::MainWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MainWidget)
{
    ui->setupUi(this);
    m_patientIndex = 0;
    m_wsConnectedStatus = 0;
    m_maxPatientNum = MainConfig::maxPatientNum.toInt();
    m_switchPatientInterval = MainConfig::switchPatientInterval.toInt();

    //1s倒计时
    m_countDownTimer.setInterval(1000);
    m_countDownTimer.start();
    connect(&m_countDownTimer, &QTimer::timeout,[=](){
        for(PatientEmergencyInfo *info : m_patientEmergencyInfos){
            if(info->realCountDownInSeconds > 0){
                info->realCountDownInSeconds--;
            }
        }
    });

    //切换病人
    m_switchPatientTimer.setInterval(5000);
    m_switchPatientTimer.start();
    connect(&m_switchPatientTimer, &QTimer::timeout,[=](){
        if(++m_patientIndex >= m_patientEmergencyInfos.length()){
            m_patientIndex = 0;
        }
        updateUi();
    });

    //显示连接状态
    ui->statusLabel->setText("Not Connected");
}

MainWidget::~MainWidget()
{
    delete ui;
}

void MainWidget::updateUi()
{
    ui->statusLabel->setText(QString("%1 | %2")
                             .arg(m_wsConnectedStatus == 0 ? "未连接" : "已经连")
                             .arg(m_patientEmergencyInfos.length())
                    );

    if(m_patientEmergencyInfos.length() == 0){
        //不显示
        ui->textLabel->setText("");
        ui->countdownLabel->setText("");
        return;
    }

    //获取当前病人
    if(m_patientIndex >= m_patientEmergencyInfos.length()){
        m_patientIndex = 0;
    }
    PatientEmergencyInfo *pInfo = m_patientEmergencyInfos[m_patientIndex];

    //显示文本
    ui->textLabel->setText(pInfo->text);

    //显示倒计时
    int hour,min,sec,nTotalSecs;
    nTotalSecs = pInfo->realCountDownInSeconds;
    sec  = nTotalSecs % 60;
    min  = nTotalSecs / 60 % 60;
    hour = nTotalSecs / 3600;
    QString str = QString("%1:%2").arg(min,2,10,QLatin1Char('0')).arg(sec,2,10,QLatin1Char('0'));
    ui->countdownLabel->setText(str);
}

void MainWidget::onWsConnectedStatusChanged(int status)
{
    qDebug() << "MainWidget::onWsConnectedStatusChanged " << status;
    updateUi();
}

void MainWidget::onNewPatientMergencyInfo(QString firstAidId, QString name, QString content, quint64 realCountDownInSeconds)
{
    //TODO 此处是否需要加锁处理
    PatientEmergencyInfo *pInfo = new PatientEmergencyInfo(firstAidId,name,content,realCountDownInSeconds);
    addPatientToList(pInfo);
    qDebug() << "MainWidget::onNewPatientMergencyInfo " << firstAidId << name << content << realCountDownInSeconds;
}

void MainWidget::onPatientMergencyStatusChanged(QString firstAidId,QString time, QString status)
{
    //TODO firstAidId == null 选择倒计时最小的急救

    qDebug() << "MainWidget::onPatientMergencyStatusChanged " << firstAidId << time << status;

    if(status == 0){
        return;
    }

    //发送信号，该信号与httpservice的updatestatus请求绑定
    emit statusChanged(firstAidId,status);

    //处理状态改变
    if(status == 1){ //进行中（拍了一下按键）

    }else if(status == 2){//服务环节结束
        deletePatientFromList(firstAidId);
    }
}

void MainWidget::addPatientToList(PatientEmergencyInfo *info)
{
    //1.如果有就删除，以保证同一个病人按两次应该重新开始计时
    deletePatientFromList(info->id);

    //2.如果超过长度，就删除第一个，取后来的
    if(m_patientEmergencyInfos.length() >= m_maxPatientNum){
        delete m_patientEmergencyInfos[0];
        m_patientEmergencyInfos.pop_front();
    }

    //3.加入链表
    m_patientEmergencyInfos.push_back(info);
}

void MainWidget::deletePatientFromList(QString firstAidId)
{
    for(int i=0;i<m_patientEmergencyInfos.length();i++){
        if(m_patientEmergencyInfos[i]->id == firstAidId){
            delete m_patientEmergencyInfos[i];
            m_patientEmergencyInfos.removeAt(i);
            break;
        }
    }
}