Qt 实现的跑马灯效果

#include "widget.h" #include "ui_widget.h" #include <QTimer> #include <QJsonObject> #include <QFile> #include <QJsonDocument> #include <QTextStream> #include <QDebug> #include <QTime> #include <QTcpServer> #include <QHostAddress> #include <QSettings> #include <QTextCodec> QString Widget::g_sFontName="SimSun"; QString Widget::g_sFontSize="30"; QString Widget::g_sColor="255,0,0"; QString Widget::g_sSpeed="1"; QString Widget::g_sText=QStringLiteral("welcome"); Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget), m_pSocket(nullptr) { ui->setupUi(this); initUi(); //1 读取配置文件 加载保存的指令 readSettings(); //2 初始化标签显示内容 updateData(); //3 左上角 右下角时间显示 QTimer* timer = new QTimer(this); connect(timer, &QTimer::timeout,[=](){ QDate curDate = QDate::currentDate(); QString str1 = curDate.toString("yyyy/MM/dd"); QString str2 = QTime::currentTime().toString("hh:mm:ss"); QString str3 =curDate.toString("ddd"); ui->time1Label->setText(str1+" "+str2); ui->date1Label->setText(str3); ui->time2Label->setText(str1+" "+str2); ui->date2Label->setText(str3); }); timer->start(1000); // //4 tcpServer,准备接收指令 QTcpServer *tcpServer = new QTcpServer(this); bool bListen = tcpServer->listen(QHostAddress::Any,8899); if(bListen){ connect(tcpServer,&QTcpServer::newConnection,[=](){ m_pSocket = tcpServer->nextPendingConnection(); connect(m_pSocket,SIGNAL(readyRead()),this,SLOT(sl_readTcpData())); }); }else qDebug()<<"tcpListenError:"<<tcpServer->errorString(); } Widget::~Widget() { delete ui; } void Widget::readSettings() { QSettings iniFile(QCoreApplication::applicationDirPath()+ "/settings.ini",QSettings::IniFormat); g_sFontName = iniFile.value("FontName").toString(); g_sFontSize = iniFile.value("FontSize").toString(); g_sColor = iniFile.value("Color").toString(); g_sSpeed = iniFile.value("Speed").toString(); g_sText = iniFile.value("Text").toString(); updateData(); qDebug()<<"readSettings:"<<g_sFontName<<g_sFontSize<<g_sColor<<g_sSpeed<<g_sText; } void Widget::saveSettings() { QTextCodec *codec = QTextCodec::codecForName("UTF-8"); QSettings iniFile(QCoreApplication::applicationDirPath()+ "/settings.ini",QSettings::IniFormat); iniFile.setIniCodec(codec); iniFile.setValue("FontName",g_sFontName); iniFile.setValue("FontSize",g_sFontSize); iniFile.setValue("Color",g_sColor); iniFile.setValue("Speed",g_sSpeed); iniFile.setValue("Text",g_sText); } void Widget::initUi() { m_ticker1 = new Ticker(this); QGridLayout* layout1 = new QGridLayout(ui->textLab1); layout1->addWidget(m_ticker1); layout1->setMargin(0); ui->textLab1->setLayout(layout1); m_ticker2 = new Ticker(this); QGridLayout* layout2 = new QGridLayout(ui->textLab2); layout2->addWidget(m_ticker2); layout2->setMargin(0); ui->textLab2->setLayout(layout2); m_ticker3 = new Ticker(this); QGridLayout* layout3 = new QGridLayout(ui->textLab3); layout3->addWidget(m_ticker3); layout3->setMargin(0); ui->textLab3->setLayout(layout3); m_ticker4 = new Ticker(this); QGridLayout* layout4 = new QGridLayout(ui->textLab4); layout4->addWidget(m_ticker4); layout4->setMargin(0); ui->textLab4->setLayout(layout4); connect(m_ticker1,SIGNAL(finish()),m_ticker2,SLOT(start())); connect(m_ticker2,SIGNAL(finish()),m_ticker3,SLOT(start())); connect(m_ticker3,SIGNAL(finish()),m_ticker4,SLOT(start())); connect(m_ticker4,SIGNAL(finish()),m_ticker1,SLOT(start())); } void Widget::updateData() { if(m_ticker1){ m_ticker1->setParam(g_sFontName,g_sFontSize,g_sColor,g_sSpeed,g_sText); } if(m_ticker2){ m_ticker2->setParam(g_sFontName,g_sFontSize,g_sColor,g_sSpeed,g_sText); } if(m_ticker3){ m_ticker3->setParam(g_sFontName,g_sFontSize,g_sColor,g_sSpeed,g_sText); } if(m_ticker4){ m_ticker4->setParam(g_sFontName,g_sFontSize,g_sColor,g_sSpeed,g_sText); } m_ticker1->start(); } void Widget::sl_readTcpData() { if(m_pSocket){ QString str = m_pSocket->readAll(); if(str.contains("$$$$")&&str.count("$$$$")==1) { QString speed=g_sSpeed,color=g_sColor,font=g_sFontName,fontSize=g_sFontSize,text=g_sText; if(str.contains("Speed")){//速度 QStringList strList = str.split(":"); if(strList.size()==2) { QString tmpStr = strList.at(1); speed = tmpStr.remove("$$$$"); } } else if(str.contains("Color")){//颜色 QStringList strList = str.split(":"); if(strList.size()==5) { QString rStr = strList.at(1); QString gStr = strList.at(2); QString bStr = strList.at(3); QString tmpA = strList.at(4); QString aStr = tmpA.remove("$$$$"); color=rStr+":"+gStr+":"+bStr+":"+aStr; } } else if(str.contains("Text")){//内容 QStringList strList = str.split(":"); if(strList.size()==2) { QString tmpStr = strList.at(1); tmpStr.remove("$$$$"); text = tmpStr; } } else if(str.contains("Font")){//字体 QStringList strList = str.split(":"); if(strList.size()==3) { font = strList.at(1); QString tmpFontSize = strList.at(2); fontSize = tmpFontSize.remove("$$$$"); } } qDebug()<<"sl_readTcpData:"<<speed<<color<<font<<fontSize<<text; g_sFontName=font; g_sFontSize=fontSize; g_sColor=color; g_sSpeed=speed; g_sText=text; saveSettings(); updateData(); } } }