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火影发表于 2024-12-29 22:24:56

Qt信号与槽及QSS界面美化

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login2_0.pro
QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
main.cpp \
user.cpp \
widget.cpp

HEADERS += \
user.h \
widget.h

FORMS += \
user.ui \
widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
sor.qrc
user.h
#ifndef USER_H
#define USER_H

#include <QWidget>

namespace Ui {
class User;
}

class User : public QWidget
{
Q_OBJECT

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

public slots:
void login();
private:
Ui::User *ui;
};

#endif // USER_H
widget.h
#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QTimer>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
Q_OBJECT

public:
Widget(QWidget *parent = nullptr);
~Widget();
signals:
void log_sig();
public slots:
void btn_closed();
void btn_hide();
private slots:
void on_pushButton_clicked();

private:
Ui::Widget *ui;
};
#endif // WIDGET_H
main.cpp
#include "widget.h"
#include "user.h"
#include <QApplication>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
User u;
QObject::connect(&w,&Widget::log_sig,&u,&User::login);
return a.exec();
}
user.cpp
#include "user.h"
#include "ui_user.h"

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

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

void User::login()
{
this->show();
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
this->setWindowFlag(Qt::FramelessWindowHint);
this->setAttribute(Qt::WA_TranslucentBackground);
QObject::connect(ui->pushButton_2,SIGNAL(clicked()),this,SLOT(btn_closed()));
QObject::connect(ui->pushButton_3,SIGNAL(clicked()),this,SLOT(btn_hide()));
}

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

void Widget::btn_closed()
{
this->close();
}
void Widget::btn_hide()
{
this->showMinimized();
}
void Widget::on_pushButton_clicked()
{
if(ui->lineEdit->text() == "admin" && ui->lineEdit_2->text() == "12345")
{
 ui->label_3->setStyleSheet(QString("background-color:blue;color:white"));
 ui->label_3->setText("登陆成功");
 emit log_sig();
 // 使用 QTimer 延时关闭
 QTimer::singleShot(600, this, ()
 {
 ui->label_3->setStyleSheet(QString("background:transparent;"));

 this->close();
 });
}
else
{
 ui->label_3->setText("登陆失败");
 ui->label_3->setStyleSheet(QString("background-color:red;color:black"));
 // 使用 QTimer 延时清除文本
 QTimer::singleShot(600, this, ()
 {
 ui->label_3->setStyleSheet(QString("background:transparent;"));
 ui->label_3->setText("");
 ui->lineEdit_2->setText("");
 });
}
}
user.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>User</class>
<widget class="QWidget" name="User">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Form</string>
</property>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>80</x>
<y>60</y>
<width>211</width>
<height>151</height>
</rect>
</property>
<property name="text">
<string>用户界面</string>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>
widget.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Widget</class>
<widget class="QWidget" name="Widget">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>510</width>
<height>630</height>
</rect>
</property>
<property name="windowTitle">
<string>Widget</string>
</property>
<property name="styleSheet">
<string notr="true">*{
background-color: rgb(85, 85, 127);
}
QFrame#frame{
border-image: url(:/Logo/shanChuan.jpg);
border-radius:30px;
}

QFrame#frame_2{
background-color: rgba(116, 116, 116, 100);
border-radius:30px;
}

QLabel#label{
background-color: rgba(0, 0, 0, 40);
border-radius:30px;
}
#label_2{
font: 75 18pt "微软雅黑";
background:transparent;/*完全透明*/
color: rgba(193, 193, 193, 150);
}
#label_3{
qproperty-alignment: AlignCenter;
font: 75 20pt "微软雅黑";
background:transparent;/*完全透明*/
color: rgba(255, 0, 0, 150);
}
QLineEdit{
background-color: rgba(195, 195, 195, 0);
border:none;/*无边框*/
border-bottom:1px solid rgba(255, 255, 255, 150);
color: rgba(193, 193, 193, 150);
}
QPushButton#pushButton{
background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:1, stop:0.6875 rgba(0, 47, 225, 255), stop:1 rgba(255, 255, 255, 255));
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton:hover{
background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:1, stop:0.6875 rgba(50, 80, 225, 255), stop:1 rgba(255, 255, 255, 255));
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton:pressed{
background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:1, stop:0.6875 rgba(80, 47, 225, 255), stop:1 rgba(255, 255, 255, 255));
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
padding-top:5px;
padding-left:5px;
}
QPushButton#pushButton_2{

background-color: rgba(214, 214, 214, 0);
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton_2:hover{
background-color: red;
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton_2:pressed{
background-color: rgba(214, 214, 214, 0);
font: 75 16pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
padding-top:5px;
padding-left:5px;
}
QPushButton#pushButton_3{

background-color: rgba(214, 214, 214, 0);
font: 75 25pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton_3:hover{
background-color: red;
font: 75 25pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
}
QPushButton#pushButton_3:pressed{
background-color: rgba(214, 214, 214, 0);
font: 75 25pt "微软雅黑";
color: rgba(193, 193, 193, 150);
border-radius:5px;
padding-top:5px;
padding-left:5px;
}

</string>
</property>
<widget class="QFrame" name="frame">
<property name="geometry">
<rect>
<x>40</x>
<y>90</y>
<width>431</width>
<height>501</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true"/>
</property>
<property name="frameShape">
<enum>QFrame::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Raised</enum>
</property>
<widget class="QFrame" name="frame_2">
<property name="geometry">
<rect>
 <x>0</x>
 <y>0</y>
 <width>431</width>
 <height>501</height>
</rect>
</property>
<property name="frameShape">
<enum>QFrame::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Raised</enum>
</property>
<widget class="QLabel" name="label">
<property name="geometry">
 <rect>
 <x>40</x>
 <y>60</y>
 <width>350</width>
 <height>420</height>
 </rect>
</property>
<property name="text">
 <string/>
</property>
</widget>
<widget class="QLabel" name="label_2">
<property name="geometry">
 <rect>
 <x>150</x>
 <y>100</y>
 <width>121</width>
 <height>31</height>
 </rect>
</property>
<property name="font">
 
 <family>微软雅黑</family>
 <pointsize>18</pointsize>
 <weight>9</weight>
 <italic>false</italic>
 <bold>false</bold>
 
</property>
<property name="text">
 <string>登陆界面</string>
</property>
</widget>
<widget class="QLineEdit" name="lineEdit">
<property name="geometry">
 <rect>
 <x>80</x>
 <y>200</y>
 <width>261</width>
 <height>51</height>
 </rect>
</property>
<property name="font">
 
 <pointsize>13</pointsize>
 
</property>
<property name="placeholderText">
 <string>请输入账户：</string>
</property>
</widget>
<widget class="QLineEdit" name="lineEdit_2">
<property name="geometry">
 <rect>
 <x>80</x>
 <y>290</y>
 <width>261</width>
 <height>51</height>
 </rect>
</property>
<property name="font">
 
 <pointsize>13</pointsize>
 
</property>
<property name="echoMode">
 <enum>QLineEdit::Password</enum>
</property>
<property name="placeholderText">
 <string>请输入密码：</string>
</property>
</widget>
<widget class="QPushButton" name="pushButton">
<property name="geometry">
 <rect>
 <x>80</x>
 <y>390</y>
 <width>261</width>
 <height>51</height>
 </rect>
</property>
<property name="text">
 <string>登陆</string>
</property>
</widget>
<widget class="QLabel" name="label_3">
<property name="geometry">
 <rect>
 <x>40</x>
 <y>10</y>
 <width>351</width>
 <height>51</height>
 </rect>
</property>
<property name="font">
 
 <family>微软雅黑</family>
 <pointsize>20</pointsize>
 <weight>9</weight>
 <italic>false</italic>
 <bold>false</bold>
 
</property>
<property name="text">
 <string/>
</property>
</widget>
<widget class="QPushButton" name="pushButton_2">
<property name="geometry">
 <rect>
 <x>370</x>
 <y>0</y>
 <width>51</width>
 <height>31</height>
 </rect>
</property>
<property name="text">
 <string>x</string>
</property>
</widget>
<widget class="QPushButton" name="pushButton_3">
<property name="geometry">
 <rect>
 <x>320</x>
 <y>0</y>
 <width>51</width>
 <height>31</height>
 </rect>
</property>
<property name="font">
 
 <family>微软雅黑</family>
 <pointsize>25</pointsize>
 <weight>9</weight>
 <italic>false</italic>
 <bold>false</bold>
 
</property>
<property name="text">
 <string>-</string>
</property>
</widget>
</widget>
</widget>
</widget>
<resources/>
<connections/>
</ui>

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Qt信号与槽及QSS界面美化