qt使用tab管理多个界面

1.需求

要求实现多个页面之间的切换

2.解决

打算采用tab页来管理多个页面，并隐藏tab头

3.代码

main.cpp

#include "mytab.h"
#include <QtWidgets/QApplication>

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

mytab.h

#ifndef MYTAB_H
#define MYTAB_H

#include <QtWidgets/QMainWindow>
#include <QResizeEvent>
#include "ui_mytab.h"
#include "pagemain.h"
#include "pageend.h"
#include "pageset.h"
#include "mydefine.h"
#include <QMap>
#include <boost/bimap.hpp>

class mytab : public QMainWindow
{
Q_OBJECT

public:
typedef boost::bimap<E_TAB_PAGE,int> MapPageIndex;

public:
mytab(QWidget *parent = 0);
~mytab();

private slots:
void pagechange(E_TAB_PAGE page);

public:
E_TAB_PAGE pagetype();

protected:
virtual void resizeEvent(QResizeEvent * event);

private:
QTabWidget              m_tabWidget;        //管理tab：“交接班”和“设置”
PageMain                m_pageMain;         //主页面部分
PageEnd                 m_pageEnd;          //交接部分
PageSet                 m_pageSet;          //设置部分
MapPageIndex            m_mapPageIndex;     //页面和tab索引进行绑定

private:
void init();
void resize();

private:
Ui::mytabClass ui;
};

#endif // MYTAB_H

mytab.cpp

#include "mytab.h"
#include <QLineEdit>
#include <QPushButton>
#include <QVBoxLayout>
#include <QSize>
#include <utility>

mytab::mytab(QWidget *parent)
: QMainWindow(parent), m_pageMain(parent),m_pageSet(parent),m_pageEnd(parent)
{
ui.setupUi(this);

init();
connect(&m_pageMain, SIGNAL(pagechange(E_TAB_PAGE)), this, SLOT(pagechange(E_TAB_PAGE)));
connect(&m_pageEnd, SIGNAL(pagechange(E_TAB_PAGE)), this, SLOT(pagechange(E_TAB_PAGE)));
connect(&m_pageSet, SIGNAL(pagechange(E_TAB_PAGE)), this, SLOT(pagechange(E_TAB_PAGE)));

//这里可以发送两次信号 这样不实时
m_pageEnd.init(this);
m_pageMain.init(this);
m_pageSet.init(this);
}

mytab::~mytab()
{
}

void mytab::init()
{
//m_mapPageIndex.clear();

//对tab进行设置下这里要
//必须设置父类，否则tab显示为另一个窗口
m_tabWidget.setParent(this);

m_tabWidget.setStyleSheet(
"QTabWidget::pane{border: 0px;}"
"QTabWidget::tab-bar{alignment:center;}"
"QTabBar::tab{background:transparent; color:white; min-width:30ex; min-height:10ex;}"
"QTabBar::tab:hover{background:rgb(255, 255, 255, 100);}"
"QTabBar::tab:selected{border-color: white;background:white;color:green;}");

//隐藏QTabWidget，否则主窗口被覆盖
//m_tabWidget.hide();

//隐藏tab
m_tabWidget.tabBar()->hide();

//设置tab可关闭
m_tabWidget.setTabsClosable(true);

//添加tab
int nindex = -1;
nindex = m_tabWidget.addTab(&m_pageMain,tr("pagemain"));
if (nindex != -1)
m_mapPageIndex.insert(MapPageIndex::value_type(E_MAIN_PAGE, nindex));
//m_mapPageIndex[E_MAIN_PAGE] = nindex;

nindex = m_tabWidget.addTab(&m_pageSet,tr("pageset"));
if (nindex != -1)
m_mapPageIndex.insert(MapPageIndex::value_type(E_SET_PAGE, nindex));
//m_mapPageIndex[E_SET_PAGE] = nindex;

nindex = m_tabWidget.addTab(&m_pageEnd,tr("pageend"));
if (nindex != -1)
m_mapPageIndex.insert(MapPageIndex::value_type(E_END_PAGE, nindex));
//m_mapPageIndex[E_END_PAGE] = nindex;

//显示QTabWidget
m_tabWidget.show();

QRect rtClient = this->geometry();
m_tabWidget.setGeometry(rtClient);
m_pageMain.setGeometry(rtClient);

pagechange(E_MAIN_PAGE);
}

void mytab::resizeEvent(QResizeEvent * event)
{
resize();
}

void mytab::resize()
{
QSize szClient = this->size();
m_tabWidget.setGeometry(0, 0, szClient.width(), szClient.height());
QWidget *ptab = m_tabWidget.currentWidget();
if (ptab != nullptr)
ptab->setGeometry(0, 0, szClient.width(), szClient.height());
}

void mytab::pagechange(E_TAB_PAGE page)
{
//这里查询左map
MapPageIndex::left_const_iterator it = m_mapPageIndex.left.find(page);
if (it != m_mapPageIndex.left.end())
{
m_tabWidget.setCurrentIndex(it->second);
resize();
}
}

E_TAB_PAGE mytab::pagetype()
{
E_TAB_PAGE page = E_INVALID_PAGE;
int nindex = m_tabWidget.currentIndex();
if (nindex != -1)
{
MapPageIndex::right_const_iterator it = m_mapPageIndex.right.find(nindex);
if (it != m_mapPageIndex.right.end())
page = it->second;
}
return page;
}

pagemain.h

#ifndef PAGEMAIN_H
#define PAGEMAIN_H

#include <QWidget>
#include "ui_pagemain.h"
#include "mydefine.h"

class PageMain : public QWidget
{
Q_OBJECT

public:
PageMain(QWidget *parent = 0);
~PageMain();

public:
void init(QWidget *pParent);

signals:
void pagechange(E_TAB_PAGE page);

private slots:
void on_endButton_clicked();
void on_setButton_clicked();
void on_typeButton_clicked();

private:
Ui::PageMain ui;
QWidget *m_pParent;
};

#endif // PAGEMAIN_H

pagemain.cpp

#include "pagemain.h"
#include "mytab.h"
#include <QMessageBox>

PageMain::PageMain(QWidget *parent)
: QWidget(parent)
{
ui.setupUi(this);
m_pParent = nullptr;
}

PageMain::~PageMain()
{
}

void PageMain::on_endButton_clicked()
{
emit this->pagechange(E_END_PAGE);
}

void PageMain::on_setButton_clicked()
{
emit this->pagechange(E_SET_PAGE);
}

void PageMain::on_typeButton_clicked()
{
if (m_pParent != nullptr)
{
E_TAB_PAGE page = ((mytab *)m_pParent)->pagetype();
QString strMsg("");
strMsg = QString("%1").arg(page);
QMessageBox::information(this, "page", strMsg);
}
}

void PageMain::init(QWidget *pParent)
{
m_pParent = pParent;
}

mydefine.h

#ifndef MY_DEFINE_H
#define MY_DEFINE_H

typedef enum eTabPages
{
E_MAIN_PAGE,
E_SET_PAGE,
E_END_PAGE,
E_INVALID_PAGE
}E_TAB_PAGE;

#endif

PageSet和PageEnd与PageMain较为相似 不进行上传

4.备注

1.tab中的widget必须要有父类(否则可能会出现问题)

2.项目牵涉到由类型找tab索引和tab索引查找类型 故使用了boost的bimap来实现双向查找

3.在vs2010+qt5.40+win7上编译通过