QT--day3

2> 完成文本编辑器的保存工作

widget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
}

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


void Widget::on_fontbtn_clicked()
{
    bool ok;
    //调用grtfont获取一个字体对话框
    QFont f=QFontDialog::getFont(&ok,
                         QFont("隶书",10,10,false),
                         this,
                         "选择字体");
    //对OK进行判断，判断用户是否选择字体
    if(ok)
    {
        //用户选择字体
        //将选中的字体，进行设置
        //设置全部文字字体
        //ui->textEdit->setFont(f);

        //设置选中的字体
        ui->textEdit->setCurrentFont(f);
        //设置选中字体倾斜
        //ui->textEdit->setFontItalic(true);
    }else
    {
        //用户没有选择字体
        QMessageBox::information(this,"取消",
                                 "用户取消选择字体");
    }
}
//颜色按钮对应的槽函数
void Widget::on_colorbtn_clicked()
{
    QColor c=QColorDialog::getColor(QColor("green"),
                                    this,
                                    "选择颜色");
    if(c.isValid())
    {
        //设置字体的颜色
        ui->textEdit->setTextColor(c);
        //设置字体的背景的颜色
        ui->textEdit->setTextBackgroundColor(c);
    }else
    {
        QMessageBox::information(this,"取消","用户取消了选择颜色");
    }
}

void Widget::on_openbtn_clicked()
{
    QString fileName = QFileDialog::getOpenFileName(this,
                                                    "选择文件",
                                                    "./",
                                                    "ALL(*.*);;Images(*.png *.xpm *.jpg)::Text file (*.text)");
    //判断是否选择文件
    if(fileName.isNull())
    {
        QMessageBox::information(this,"提示","用户取消了选择");
        return;
    }

    qDebug()<textEdit->setText(msg);

}
//保存
void Widget::on_savebtn_clicked()
{
    QString fileName = QFileDialog::getSaveFileName(this,
                                                    "保存文件",
                                                    "./",
                                                    "ALL(*.*);;Images(*.png *.xpm *.jpg)::Text file (*.text)");

    if(fileName.isNull())
    {
        QMessageBox::information(this,"提示","用户取消了保存");
        return;
    }

    qDebug()<textEdit->toPlainText();
    file.write(text.toUtf8());
    file.close();

}

3、定时器播报

wiget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    timer_id = this->startTimer(1000);
    tt=new QTextToSpeech(this);
}

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

void Widget::timerEvent (QTimerEvent *e)
{
    if(e->timerId()==timer_id)
    {
        QTime sys_t =QTime::currentTime();
        QString t=sys_t.toString("hh.mm");
        ui->label->setText(t);
    }else if(e->timerId()==timer_id2)
    {
        QString t=ui->lineEdit->text();
        QString t1=ui->label->text();
        if(t==t1)
        {
            QString a1=ui->textEdit->toPlainText();
            tt->say(a1);
        }

    }



}
void Widget::on_pushButton_clicked()
{
    timer_id2 = this->startTimer(3000);
}

void Widget::on_pushButton_2_clicked()
{
    tt->stop();
    this->killTimer(timer_id2);
}

wiget.h