//widget.cpp

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



void Widget::usr_login()
{
    if("admin" == this->edit_acc->text())
    {
        if("123456" == this->edit_psd->text())
        {
            speech->say("登录成功");
            emit jump_sig1();
            this->hide();
        }
        else {
            speech->say("账号或密码错误");
            this->edit_psd->clear();
        }
        return;
    }
    speech->say("账号或密码错误");

    this->edit_psd->clear();
}

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

    //设置窗口标题
    this->setWindowTitle("第七史诗");
    //设置窗口icon
    this->setWindowIcon(QIcon(":/icon/1.png"));

    //设置窗口大小
    this->resize(QSize(500,400));


    //创建标签，设置图片
    this->lab_front = new QLabel(this);
    lab_front->setPixmap(QPixmap(":/icon/logo.png"));
    lab_front->setScaledContents(true);
    lab_front->resize(500,200);

    lab_acc = new QLabel(this);
    lab_acc->setPixmap(QPixmap(":/icon/userName.jpg"));
    lab_acc->setScaledContents(true);
    lab_acc->resize(40,30);
    lab_acc->move(100,lab_front->y() + lab_front->height() + 30);


    lab_psd = new QLabel(this);
    lab_psd->setPixmap(QPixmap(":/icon/passwd.jpg"));
    lab_psd->resize(lab_acc->size());
    lab_psd->setScaledContents(true);
    lab_psd->move(lab_acc->x(),lab_acc->y() + 50);

    //增加单行编辑器
    edit_acc = new QLineEdit(this);
    edit_acc->setPlaceholderText("stove账号/邮箱");
    cout << lab_acc->width() << endl;
    edit_acc->move(lab_acc->x() + lab_acc->width() + 50,lab_acc->y());

    edit_psd = new QLineEdit(this);
    edit_psd->setPlaceholderText("密码");
    edit_psd->move(edit_acc->x(),edit_acc->y() + 50);

    //设置输入内容隐藏
    edit_psd->setEchoMode(QLineEdit :: Password);

    //登录按钮
    btn_login = new QPushButton("登录",this);
    btn_login->setIcon(QIcon(":/icon/login.png"));
    btn_login->move(300,edit_psd->y() + edit_psd->height() + 30);

    //取消按钮
    btn_cancel = new QPushButton("取消",this);
    btn_cancel->setIcon(QIcon(":/icon/cancel.png"));
    btn_cancel->move(btn_login->x() + btn_login->width() + 10,btn_login->y());

    //设置语音播报
    speech = new QTextToSpeech(this);


    server = new QComboBox(this);
    server->addItem("日本服务器");
    server->addItem("韩国服务器");
    server->addItem("国际服务器");
    server->move(50,btn_cancel->y());
    connect(btn_cancel,&QPushButton :: clicked,this,&Widget :: close);
    connect(btn_login,&QPushButton :: clicked,this,&Widget :: usr_login);



}

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

//widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QSize>
#include <QPushButton>
#include <QLineEdit>
#include <QLabel>
#include <QComboBox>
#include <iostream>
#include <QString>
#include <QDebug>
#include <QTextToSpeech>
#include <windows.h>

using namespace std;


namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT
    public:
signals:
    void my_signal();
    void jump_sig1();
public slots:
    void usr_login();

public:
    explicit Widget(QWidget *parent = nullptr);
    ~Widget();


private:
    Ui::Widget *ui;
    QLabel *lab_front,*lab_acc,*lab_psd;
    QLineEdit *edit_acc,*edit_psd;
    QPushButton *btn_login,*btn_cancel;
    QComboBox *server;
    QTextToSpeech *speech;

};

//void Widget :: jump_sig1()
//{
//    this->hide();
//}

#endif // WIDGET_H

//form.h

#ifndef FORM_H
#define FORM_H

#include <QWidget>
#include "widget.h"
namespace Ui {
class Form;
}

class Form : public QWidget
{


    Q_OBJECT


public slots:
    void jump_slot();

public:
    explicit Form(QWidget *parent = nullptr);
    ~Form();

private:
    Ui::Form *ui;
    QPushButton *return_key;
};

#endif // FORM_H

//form.cpp

#include "form.h"
#include "ui_form.h"

void Form::jump_slot()
{
    this->show();
}

Form::Form(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Form)
{
    ui->setupUi(this);
    this->resize(QSize(800,700));
    return_key = new QPushButton(this);
    return_key->resize(80,70);
    QPixmap icon1(":/icon/return.png");
    icon1.scaled(return_key->size());

//    QLabel *lab = new QLabel(this);
//    lab->setPixmap(icon1);
    return_key->setIcon(icon1);

    return_key->setStyleSheet("background-image:url(:/icon/return.png)");
    return_key->move(300,200);

}

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

//main.cpp

#include "widget.h"
#include <QApplication>
#include "form.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    Form f;
    //f.show();
    QObject :: connect(&w,&Widget :: jump_sig1,&f,&Form :: jump_slot);
    return a.exec();
}

运行效果

登录成功后跳转from界面