first commit

Network/IPEdit/IPEdit.cpp

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+#include "IPEdit.h"
+#include <QPainter>
+#include <QApplication>
+#include <QStyle>
+#include <QStyleOptionButton>
+#include <QKeyEvent>
+#include <QShortcutEvent>
+#include <QRegExpValidator>
+#include <QRegExp>
+#include <QClipboard>
+#include <QDebug>
+
+IPEdit::IPEdit(QWidget *parent) : QWidget(parent)
+{
+    init();
+}
+
+IPEdit::~IPEdit()
+{
+    
+}
+
+void IPEdit::init()
+{
+    m_layout = new QHBoxLayout(this);
+    m_layout->setSpacing(3);
+    m_layout->setContentsMargins(2, 0, 2, 0);
+    
+    m_edit1 = new QLineEdit(this);
+    m_edit2 = new QLineEdit(this);
+    m_edit3 = new QLineEdit(this);
+    m_edit4 = new QLineEdit(this);
+    
+    initForEdit(m_edit1);
+    initForEdit(m_edit2);
+    initForEdit(m_edit3);
+    initForEdit(m_edit4);
+    
+    m_dot1 = new QLabel(".", this);
+    m_dot2 = new QLabel(".", this);
+    m_dot3 = new QLabel(".", this);
+    
+    m_layout->addWidget(m_edit1, 1);
+    m_layout->addWidget(m_dot1);
+    m_layout->addWidget(m_edit2, 1);
+    m_layout->addWidget(m_dot2);
+    m_layout->addWidget(m_edit3, 1);
+    m_layout->addWidget(m_dot3);
+    m_layout->addWidget(m_edit4, 1);
+}
+
+void IPEdit::initForEdit(QLineEdit* edit)
+{
+    edit->setFrame(false);
+    edit->setAlignment(Qt::AlignCenter);
+    edit->installEventFilter(this);
+    
+    QRegExpValidator* validator = new QRegExpValidator(QRegExp("^(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)$"), this);
+    edit->setValidator(validator);
+    
+    connect(edit, SIGNAL(textChanged(const QString&)), this, SLOT(editTextChanged(const QString&)));
+}
+
+QLineEdit* IPEdit::nextEdit(QLineEdit* curEdit)
+{
+    if (curEdit == m_edit1)
+        return m_edit2;
+    else if (curEdit == m_edit2)
+        return m_edit3;
+    else if (curEdit == m_edit3)
+        return m_edit4;
+    else
+        return NULL;
+}
+
+bool IPEdit::isEdit(QObject* object)
+{
+    return (object == m_edit1 ||
+            object == m_edit2 ||
+            object == m_edit3 ||
+            object == m_edit4);
+}
+
+QString IPEdit::text()
+{
+    QString sec1 = m_edit1->text().isEmpty() ? "0" : m_edit1->text();
+    QString sec2 = m_edit2->text().isEmpty() ? "0" : m_edit2->text();
+    QString sec3 = m_edit3->text().isEmpty() ? "0" : m_edit3->text();
+    QString sec4 = m_edit4->text().isEmpty() ? "0" : m_edit4->text();
+    return QString("%1.%2.%3.%4").arg(sec1).arg(sec2).arg(sec3).arg(sec4);
+}
+
+void IPEdit::setText(const QString& text)
+{
+    QRegExp reg("^((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)$");
+    if (!reg.exactMatch(text))
+        return;
+    
+    QStringList ips = text.split(".");
+    m_edit1->setText(ips.at(0));
+    m_edit2->setText(ips.at(1));
+    m_edit3->setText(ips.at(2));
+    m_edit4->setText(ips.at(3));
+}
+
+void IPEdit::paintEvent(QPaintEvent* event)
+{
+    QPainter painter(this);
+
+    QStyleOptionFrame option;
+    option.initFrom(this);
+    option.lineWidth = 1;
+    style()->drawPrimitive(QStyle::PE_PanelLineEdit, &option, &painter, this);
+    QWidget::paintEvent(event);
+}
+
+bool IPEdit::eventFilter(QObject* object, QEvent* event)
+{
+    if (isEdit(object))
+    {
+        if (event->type() == QEvent::KeyPress)
+        {
+            QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
+            if (keyEvent->key() == Qt::Key_Period)
+            {
+                QLineEdit* next = nextEdit(qobject_cast<QLineEdit*>(object));
+                if (next)
+                {
+                    next->setFocus();
+                    next->selectAll();
+                }
+            }
+            else if (keyEvent->matches(QKeySequence::Paste))
+            {
+                QString clip = QApplication::clipboard()->text(QClipboard::Clipboard);
+                if (clip.split(".").size() == 4)
+                {
+                    setText(clip);
+                    return true;
+                }
+            }
+        }
+    }
+
+    return QWidget::eventFilter(object, event);
+}
+
+void IPEdit::editTextChanged(const QString& text)
+{
+    QLineEdit* curEdit = qobject_cast<QLineEdit*>(sender());
+    if (text.size() == 3)
+    {
+        QLineEdit* next = nextEdit(curEdit);
+        if (next)
+        {
+            next->setFocus();
+            next->selectAll();
+        }
+    }
+}

Network/IPEdit/IPEdit.h

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+#ifndef IPEDIT_H
+#define IPEDIT_H
+
+#include <QWidget>
+#include <QLineEdit>
+#include <QSpinBox>
+#include <QLabel>
+#include <QBoxLayout>
+#include <QPaintEvent>
+
+class IPEdit : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit IPEdit(QWidget *parent = 0);
+    ~IPEdit();
+    
+    QString text();
+    void setText(const QString& text);
+    
+protected:
+    void init();
+    void initForEdit(QLineEdit* edit);
+    QLineEdit* nextEdit(QLineEdit* curEdit);
+    bool isEdit(QObject* object);
+    
+    virtual void paintEvent(QPaintEvent* event);
+    virtual bool eventFilter(QObject* object, QEvent* event);
+    
+protected slots:
+    void editTextChanged(const QString& text);
+    
+private:
+    QBoxLayout* m_layout;
+    QLineEdit* m_edit1;
+    QLineEdit* m_edit2;
+    QLineEdit* m_edit3;
+    QLineEdit* m_edit4;
+    QLabel* m_dot1;
+    QLabel* m_dot2;
+    QLabel* m_dot3;
+};
+
+#endif // IPEDIT_H

Network/IPEdit/README.md

@@ -0,0 +1,9 @@
+# 用法
+``` cpp
+    IPEdit* ipEdit = new IPEdit(this);
+    ipEdit->setGeometry(10, 10, 130, 25);
+    ipEdit->show();
+
+    ipEdit->setText("255.255.255.0");
+    QString text = ipEdit->text();
+```