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素颜马尾好姑娘i 2022-04-18 04:07 240阅读 0赞

mainwindow.cpp

#include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QPalette>
    #include <QDebug>
    #include <QList>
    
    
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow),
        m_bInitShow(false)
    {
        ui->setupUi(this);
    
        m_Lframe = new QFrame;
        m_Rframe = new QFrame;
        m_sp     = new QSplitter(this);
        m_pButton= new QPushButton(this); // after Splitter
    
        m_sp->addWidget(m_Lframe);
        m_sp->addWidget(m_Rframe);
    
        connect(m_sp,SIGNAL(splitterMoved(int,int)),this,SLOT(sl_splitterMoved(int,int)));
        connect(m_pButton,SIGNAL(clicked()),this,SLOT(sl_btnClicked()));
    
        setCentralWidget(m_sp);
        setWindowFlags(Qt::FramelessWindowHint);
    
        m_Lframe->setMouseTracking(true);
        m_Rframe->setMouseTracking(true);
        m_sp->setMouseTracking(true);
        m_pButton->setMouseTracking(true);
        setMouseTracking(true);
    
    }
    
    MainWindow::~MainWindow()
    {
        delete ui;
    }
    
    void MainWindow::setBtnPos()
    {
        int width=m_Lframe->width()-m_pButton->width();
        int heigh=(m_Lframe->height()-m_pButton->height())/2;
        m_pButton->move(width,heigh);
    }
    
    void MainWindow::setBtnIcon()
    {
        if(m_Rframe->width()!=0)
        {
            m_pButton->setIcon(QIcon(":/images/quit.png"));
        }
        else
        {
            m_pButton->setIcon(QIcon(":/images/update.png"));
        }
    }
    
    void MainWindow::showEvent(QShowEvent *event)
    {
    
        if(!m_bInitShow)
        {
            setBtnPos();
            setBtnIcon();
            m_bInitShow=true;
    
            QPalette p2=m_Rframe->palette(); // initial the frame back round
            p2.setColor(QPalette::Window,Qt::gray);
            p2.setColor(QPalette::WindowText,Qt::red);
            m_Rframe->setPalette(p2);
            m_Rframe->setAutoFillBackground(true);
            m_Rframe->setMaximumWidth(300);
    
            base= m_sp->sizes();
    
            m_pButton->setFixedSize(32,32);
            m_pButton->setIconSize(QSize(16,16));
            m_pButton->setVisible(false);
            m_pButton->setStyleSheet("border:none;");
    
        }
        QMainWindow::showEvent(event);
    
    }
    void MainWindow::resizeEvent(QResizeEvent *event)
    {
        setBtnPos();
        QMainWindow::resizeEvent(event);
    }
    
    void MainWindow::sl_splitterMoved(int pos,int index)
     {
    
         setBtnPos();
         if(m_Rframe->width()==0)
         {
             setBtnIcon();
         }
     }
    
    void MainWindow::sl_btnClicked()
    {
       // static  QList<qint32> base= m_sp->sizes(); //keep the initial pos
                QList<qint32>  newSize;
    
      if(m_Rframe->width()!=0)
       {
          newSize<<base.at(0)+base.at(1)<<0;
       }
      else
      {
          newSize<<base.at(0)<<base.at(1);
      }
       m_sp->setSizes(newSize);  //move the SPLITTER
    
       setBtnPos();
       setBtnIcon();
    
    }
    
    void MainWindow::mouseMoveEvent(QMouseEvent *event)
    {
    
       int isWidth  = m_pButton->pos().x()+m_pButton->width();
       int isHeight = m_pButton->pos().y()+m_pButton->height();
    
       int x=event->pos().x();
       int y=event->pos().y();
    
       if(x>m_pButton->pos().x()&&x<isWidth&&y>m_pButton->y()&&y<isHeight)
       {
           m_pButton->setVisible(true);
       }
    
       else
       {
           m_pButton->setVisible(false);
       }
    
    
    }

mainwindow.h

#ifndef MAINWINDOW_H
    #define MAINWINDOW_H
    
    #include <QMainWindow>
    #include <QFrame>
    #include <QSplitter>
    #include <QPushButton>
    #include <QMouseEvent>
    
    namespace Ui {
    class MainWindow;
    }
    
    class MainWindow : public QMainWindow
    {
        Q_OBJECT
    
    public:
        explicit MainWindow(QWidget *parent = 0);
        ~MainWindow();
        void setBtnPos();
        void setBtnIcon();
    
    private:
        Ui::MainWindow *ui;
        QFrame  *m_Lframe,*m_Rframe;
        QSplitter *m_sp;
        QPushButton *m_pButton;
        bool m_bInitShow;
       QList<qint32> base;
    protected:
        void showEvent(QShowEvent *event);
        void resizeEvent(QResizeEvent *event);
        void mouseMoveEvent(QMouseEvent *event);
    
    private slots:
        void sl_splitterMoved(int pos, int index);
        void sl_btnClicked();
    
    
    
    
    };
    
    #endif // MAINWINDOW_H

![20181108113644194.png][]

[20181108113644194.png]: /images/20220418/da15fdc36b1946079485667eaa65beba.png