[Qt] IP地址输入框实现

来源：互联网发布：身份证号归属地数据库编辑：程序博客网时间：2024/05/22 05:14

封装了一个ip地址的输入框。网络上下载了份代码，找不到哪里的了。经过修改之后，尽力让它的行为和windows的IP地址输入框的行为看起来像些。代码如下：

//ipaddredit.h

#ifndef IPADDREDIT_H#define IPADDREDIT_H#include <QWidget>class QLineEdit;class QLabel;class CIpPartLineEdit;class CIpAddrEdit : public QWidget{    Q_OBJECTpublic:    CIpAddrEdit(QWidget *parent = 0);    ~CIpAddrEdit();    void m_vSetText(const QString &text);    QString m_strGetText();    void m_vSetStyleSheet(const QString &styleSheet);signals:    void sigTextChanged(const QString &text);    void sigTextEdited(const QString &text);private slots:    void slot_text_Changed(const QString &text);    void slot_text_Edited(const QString &text);private:    CIpPartLineEdit * m_pIpPart1;    CIpPartLineEdit * m_pIpPart2;    CIpPartLineEdit * m_pIpPart3;    CIpPartLineEdit * m_pIpPart4;    QLabel * m_pDot1;    QLabel * m_pDot2;    QLabel * m_pDot3;};#endif // IPADDREDIT_H

//ipaddredit.cpp

#include <QRegExpValidator>#include <QLabel>#include "ippartlineedit.h"#include "ipaddredit.h"CIpAddrEdit::CIpAddrEdit(QWidget *parent) :    QWidget(parent){    m_pIpPart1 = new CIpPartLineEdit(this);    m_pIpPart2 = new CIpPartLineEdit(this);    m_pIpPart3 = new CIpPartLineEdit(this);    m_pIpPart4 = new CIpPartLineEdit(this);    m_pDot1 = new QLabel(this);    m_pDot2 = new QLabel(this);    m_pDot3 = new QLabel(this);    m_pIpPart1->setGeometry(QRect(0, 0, 42, 27));    m_pIpPart2->setGeometry(QRect(70, 0, 42, 27));    m_pIpPart3->setGeometry(QRect(140, 0, 42, 27));    m_pIpPart4->setGeometry(QRect(210, 0, 42, 27));    m_pDot1->setText("-");    m_pDot1->setGeometry(QRect(48, 5, 16, 16));    m_pDot1->setAlignment(Qt::AlignCenter);    m_pDot2->setText("-");    m_pDot2->setGeometry(QRect(118, 5, 16, 16));    m_pDot2->setAlignment(Qt::AlignCenter);    m_pDot3->setText("-");    m_pDot3->setGeometry(QRect(188, 5, 16, 16));    m_pDot3->setAlignment(Qt::AlignCenter);    QWidget::setTabOrder(m_pIpPart1, m_pIpPart2);    QWidget::setTabOrder(m_pIpPart2, m_pIpPart3);    QWidget::setTabOrder(m_pIpPart3, m_pIpPart4);    m_pIpPart1->m_vSetNextEdit(m_pIpPart2);    m_pIpPart2->m_vSetNextEdit(m_pIpPart3);    m_pIpPart3->m_vSetNextEdit(m_pIpPart4);    m_pIpPart2->m_vSetPreEdit(m_pIpPart1);    m_pIpPart3->m_vSetPreEdit(m_pIpPart2);    m_pIpPart4->m_vSetPreEdit(m_pIpPart3);    connect(m_pIpPart1, SIGNAL(textChanged(const QString&)), this, SLOT(slot_text_Changed(const QString&)));    connect(m_pIpPart2, SIGNAL(textChanged(const QString&)), this, SLOT(slot_text_Changed(const QString&)));    connect(m_pIpPart3, SIGNAL(textChanged(const QString&)), this, SLOT(slot_text_Changed(const QString&)));    connect(m_pIpPart4, SIGNAL(textChanged(const QString&)), this, SLOT(slot_text_Changed(const QString&)));    connect(m_pIpPart1, SIGNAL(textEdited(const QString&)), this, SLOT(slot_text_Edited(const QString&)));    connect(m_pIpPart2, SIGNAL(textEdited(const QString&)), this, SLOT(slot_text_Edited(const QString&)));    connect(m_pIpPart3, SIGNAL(textEdited(const QString&)), this, SLOT(slot_text_Edited(const QString&)));    connect(m_pIpPart4, SIGNAL(textEdited(const QString&)), this, SLOT(slot_text_Edited(const QString&)));}CIpAddrEdit::~CIpAddrEdit(){}void CIpAddrEdit::slot_text_Changed(const QString &/*text*/){    QString strIpPart1 = m_pIpPart1->text();    QString strIpPart2 = m_pIpPart1->text();    QString strIpPart3 = m_pIpPart1->text();    QString strIpPart4 = m_pIpPart1->text();    QString strIpAddr = QString("%1.%2.%3.%4")            .arg(strIpPart1)            .arg(strIpPart2)            .arg(strIpPart3)            .arg(strIpPart4);    emit sigTextChanged(strIpAddr);}void CIpAddrEdit::slot_text_Edited(const QString &/*text*/){    QString strIpPart1 = m_pIpPart1->text();    QString strIpPart2 = m_pIpPart1->text();    QString strIpPart3 = m_pIpPart1->text();    QString strIpPart4 = m_pIpPart1->text();    QString strIpAddr = QString("%1.%2.%3.%4")            .arg(strIpPart1)            .arg(strIpPart2)            .arg(strIpPart3)            .arg(strIpPart4);    emit sigTextEdited(strIpAddr);}void CIpAddrEdit::m_vSetText(const QString &text){    QString strIpAddr = text;    QRegExp regexp("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)");    QRegExpValidator regexp_validator(regexp, this);    int iPos = 0;    QValidator::State state = regexp_validator.validate(strIpAddr, iPos);    if(state != QValidator::Acceptable)    {        return ;    }    QStringList ipAddrList = text.split(".");    //int iCount = ipAddrList.size();    QString strIpPart1 = ipAddrList.at(0);    QString strIpPart2 = ipAddrList.at(1);    QString strIpPart3 = ipAddrList.at(2);    QString strIpPart4 = ipAddrList.at(3);    m_pIpPart1->setText(strIpPart1);    m_pIpPart2->setText(strIpPart2);    m_pIpPart3->setText(strIpPart3);    m_pIpPart4->setText(strIpPart4);}QString CIpAddrEdit::m_strGetText(){    QString strIpPart1 = m_pIpPart1->text();    QString strIpPart2 = m_pIpPart2->text();    QString strIpPart3 = m_pIpPart3->text();    QString strIpPart4 = m_pIpPart4->text();    return QString("%1.%2.%3.%4")            .arg(strIpPart1)            .arg(strIpPart2)            .arg(strIpPart3)            .arg(strIpPart4);}void CIpAddrEdit::m_vSetStyleSheet(const QString &styleSheet){    m_pIpPart1->setStyleSheet(styleSheet);    m_pIpPart2->setStyleSheet(styleSheet);    m_pIpPart3->setStyleSheet(styleSheet);    m_pIpPart4->setStyleSheet(styleSheet);}

//ippartlineedit.h

#ifndef IPPARTLINEEDIT_H#define IPPARTLINEEDIT_H#include <QLineEdit>class QWidget;class QFocusEvent;class QKeyEvent;class CIpPartLineEdit : public QLineEdit{    Q_OBJECTpublic:    CIpPartLineEdit(QWidget *parent = 0);    ~CIpPartLineEdit();    void m_vSetPreEdit(QLineEdit *preEdit);    void m_vSetNextEdit(QLineEdit *nextEdit);protected:    void focusInEvent(QFocusEvent *event);    void keyPressEvent(QKeyEvent *event);private slots:    void slot_text_Edited(const QString & text);private:    QLineEdit *m_preEdit;    QLineEdit *m_nextEdit;};#endif // IPPARTLINEEDIT_H

//ippartlineedit.cpp

#include <QIntValidator>#include <QKeyEvent>#include "ippartlineedit.h"CIpPartLineEdit::CIpPartLineEdit(QWidget *parent)    : QLineEdit(parent){    m_preEdit = NULL;    m_nextEdit = NULL;    this->setMaxLength(3);    //this->setFrame(false);    this->setAlignment(Qt::AlignCenter);    QValidator *validator = new QIntValidator(0, 255, this);    this->setValidator(validator);    connect(this, SIGNAL(textEdited(const QString&)),            this, SLOT(slot_text_Edited(const QString&)));}CIpPartLineEdit::~CIpPartLineEdit(){}void CIpPartLineEdit::m_vSetPreEdit(QLineEdit *preEdit){    m_preEdit = preEdit;}void CIpPartLineEdit::m_vSetNextEdit(QLineEdit *nextEdit){    m_nextEdit = nextEdit;}void CIpPartLineEdit::focusInEvent(QFocusEvent *event){    this->selectAll();    QLineEdit::focusInEvent(event);}void CIpPartLineEdit::keyPressEvent(QKeyEvent *event){    if(event->key() == Qt::Key_Period)    {        if(m_nextEdit &&            (this->text().size()!=0) &&           (!this->hasSelectedText()))        {            m_nextEdit->setFocus();            m_nextEdit->selectAll();        }    }    if(event->key() == Qt::Key_Backspace)    {        if(m_preEdit &&           (this->text().size() == 0))        {            m_preEdit->setFocus();            m_preEdit->setCursorPosition( m_preEdit->text().size() );        }    }    QLineEdit::keyPressEvent(event);}void CIpPartLineEdit::slot_text_Edited(const QString & text){    QIntValidator v(0, 255, this);    QString ipAddr = text;    int iPos = 0;    QValidator::State state = v.validate(ipAddr, iPos);    if(state != QValidator::Acceptable)    {        return ;    }    if(ipAddr.size() <= 1)    {        return ;    }    if(ipAddr.size() == 2)    {        int iIpNum = ipAddr.toInt();        if(iIpNum > 25)        {            if(m_nextEdit)            {                m_nextEdit->setFocus();                m_nextEdit->selectAll();            }        }    }    else    {        if(m_nextEdit)        {            m_nextEdit->setFocus();            m_nextEdit->selectAll();        }    }}

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