#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include<QValueAxis>
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#include<QLineSeries>
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MainWindow::MainWindow(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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this->setGeometry(475,290,1600,1000);
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showDate();
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showTime();
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chart_init();
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::showDate()//文本浏览器显示实时日期
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{
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QTimer *timer = new QTimer(this);
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connect(timer, &QTimer::timeout, this, [this](){
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QString currentDate = QDate::currentDate().toString("yyyy-MM-dd");
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ui->textBrowser_3->setText(currentDate);
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ui->textBrowser_3->setAlignment(Qt::AlignCenter);
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});
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timer->start(500);
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}
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void MainWindow::showTime()//文本浏览器显示实时时间
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{
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QTimer *timer = new QTimer(this);
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connect(timer, &QTimer::timeout, this, [this](){
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QString currentTime = QTime::currentTime().toString("hh:mm:ss");
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ui->textBrowser_4->setText(currentTime);
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ui->textBrowser_4->setAlignment(Qt::AlignCenter);
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});
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timer->start(500);
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}
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void MainWindow::chart_init()//绘制折线图
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{
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//设置标题
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QChart *chart_1=new QChart;
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chart_1->setTitle("产量示意图");
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ui->graphicsView->setChart(chart_1);
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//设置x轴表示日期
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QValueAxis *axis_x=new QValueAxis;
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axis_x->setTitleText("日期");
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axis_x->setRange(0,100);//设置值域
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chart_1->addAxis(axis_x,Qt::AlignBottom);//沿底边显示
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//设置y轴表示产量
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QValueAxis *axis_y=new QValueAxis;
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axis_y->setTitleText("产量");
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axis_y->setRange(0,500);//设置值域
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chart_1->addAxis(axis_y,Qt::AlignLeft);//沿左边显示
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//实际生产量曲线
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QLineSeries *line=new QLineSeries;
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line->setName("实际生产量");
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chart_1->addSeries(line);
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qreal y;
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for(int x=0;x<100;x++){
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y=100;
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line->append(x,y);
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}
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line->attachAxis(axis_x);//绑定x轴
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line->attachAxis(axis_y);//绑定y轴
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//计划生产量曲线
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QLineSeries *line1=new QLineSeries;
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line1->setName("计划生产量");
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chart_1->addSeries(line1);
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qreal y1;
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for(int x=0;x<100;x++){
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y1=100-x;
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line1->append(x,y1);
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}
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line1->attachAxis(axis_x);//绑定x轴
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line1->attachAxis(axis_y);//绑定y轴
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//预测生产量曲线
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QLineSeries *line2=new QLineSeries;
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line2->setName("预测生产量");
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chart_1->addSeries(line2);
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qreal y2;
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for(int x=0;x<100;x++){
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y2=100+x;
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line2->append(x,y2);
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}
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line2->attachAxis(axis_x);//绑定x轴
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line2->attachAxis(axis_y);//绑定y轴
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}
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