Qt --- Day03

 Widget
 
  
   
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   Widget
  
  
   
    
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    background-color: rgb(255, 255, 255);
   
   
    
   
   
    Qt::AlignCenter
   
  
  
   
    
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    Qt::AlignCenter
   
  
  
   
    
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    启动
   
  
  
   
    
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    停止
   
  
  
   
    
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     true
    
   
   
    保存
   
  
  
   
    
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    打开
   
  
 
 
 

#include
#include
#include
#include
#include
#include
#include
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
    void timerEvent(QTimerEvent *e) override;

private slots:
    void on_start_clicked();

    void on_stop_clicked();

    void on_load_clicked();

    void on_pushButton_clicked();

private:
    Ui::Widget *ui;

    //当时时间号
    int time_id;
    //查询时间号
    int timer_id;
    //语音
    QTextToSpeech * speech;
    //文件
    QFile *file;
};
#endif // WIDGET_H

#include "widget.h"
#include "ui_widget.h"
int i = 1;
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    speech = new QTextToSpeech(this);
    time_id = this->startTimer(1000);




}

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


void Widget::on_start_clicked()
{
    QString t = ui->timer->text();

    if(t==NULL)
        QMessageBox::critical(this,"错误","请输入正确时间");
    else
        timer_id = this->startTimer(100);
}

void Widget::on_stop_clicked()
{
    killTimer(timer_id);
}
void Widget::timerEvent(QTimerEvent *e)
{
    if(e->timerId() == time_id)
    {
        QTime time = QTime::currentTime();
        QString s = time.toString("hh:mm:ss");
        ui->ltime->setText(s);
    }
    if(e->timerId() == timer_id)
    {


        if(ui->ltime->text() == ui->timer->text())
        {

            speech->say(ui->textbox->document()->toPlainText());
            if(i == 5)
            {
                i = 1;
                killTimer(timer_id);
            }
        }
    }
}

void Widget::on_load_clicked()
{
    QString fname = QFileDialog::getSaveFileName(this,"选择文件","D:/","ALL(*.*);;Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)");
    if(fname!=NULL)
    {
        //实例化一个文件对象
        QFile file(fname);
        //存储内容
        QString ba;
        //打开文件
        ba = ui->textbox->document()->toPlainText();
        if(!file.isOpen())
            if(!file.open(QIODevice::WriteOnly))
            {
                QMessageBox::critical(this,"","打开文件失败");
                return;
            }
        file.write(ba.toUtf8());
        file.close();
    }
}

void Widget::on_pushButton_clicked()
{
    QString fname = QFileDialog::getOpenFileName(this,"选择文件","D:/","ALL(*.*);;Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)");
    if(fname!=NULL)
    {
        //实例化一个文件对象
        QFile file(fname);
        //存储内容
        QByteArray ba;
        //打开文件
        if(!file.isOpen())
            if(!file.open(QIODevice::ReadOnly))
            {
                QMessageBox::critical(this,"","打开文件失败");
                return;
            }
        ba = file.readAll();
        file.close();

        ui->textbox->setText(ba);
    }
    else
        ui->textbox->setText("时间到");
}

#include "widget.h"

#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}