286 lines
10 KiB
C++
286 lines
10 KiB
C++
/*
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* 此类的封装参考了：博客网址：http://blog.csdn.net/u011417605,并在此基础上进行修改
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* 1.连续输入
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* 2.连续删除
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* 3.任意位置插入
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* 4.自适应大小变化
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* 5.正则匹配，每个值不大于255.设置IP值时，有正则验证是否是IP格式
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* 实现方法：使用一个大的QLineEdit嵌套四个小的QLineEdit，中间的点是使用paintEvent画出来的。操作是使用eventFilter来进行分发实现的
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* 修改：
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* 用QWidget替换原先的__super
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* 修改构造函数中的正则匹配
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* 修改小圆点位置和大小
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* 两个QLineEdit之间的空隙，在绘制小圆点之前，把空气用白色背景填充
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* 修改样式表加边框
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* 当输入类似192时，焦点自动跳转到下一个QLineEdit出
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* 修改text()的输出，使输出由原来的1921680127变为192.168.0.127
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**/
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#include "qiplineedit.h"
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#include <QRegExpValidator>
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#include <QPainter>
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#include <QKeyEvent>
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#include <QMessageBox>
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#define SPACE 5
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QIPLineEdit::QIPLineEdit(QWidget *parent) : QLineEdit(parent) {
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QRegExp rx("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)");
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pHBox = new QHBoxLayout(this);
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pHBox->setSpacing(SPACE);
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pHBox->setContentsMargins(0, 0, 0, 0);
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for(int i = 0; i < 4; i++) {
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m_lineEidt[i] = new QLineEdit(this);
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m_lineEidt[i]->setFrame(false);
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m_lineEidt[i]->setMaxLength(3);
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m_lineEidt[i]->setAlignment(Qt::AlignCenter);
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m_lineEidt[i]->installEventFilter(this);
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m_lineEidt[i]->setValidator(new QRegExpValidator(rx, this));
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m_lineEidt[i]->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
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switch (i)
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{
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case 0:
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m_lineEidt[i]->setStyleSheet(QLatin1String( "border:1px solid #536874;\n" "border-left-color: rgb(0, 0, 0);\n"
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"border-top-color: rgb(0, 0, 0);\n" "border-bottom-color: rgb(0, 0, 0);\n" "border-right: 0px;\n"
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"border-right-color: rgbl(255, 255, 255,0);" "border-radius:0px"));
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break;
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case 1:
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m_lineEidt[i]->setStyleSheet(QLatin1String( "border:1px solid #536874;\n" "border-left-color: rgb(255, 255, 255);\n"
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"border-top-color: rgb(0, 0, 0);\n" "border-bottom-color: rgb(0, 0, 0);\n" "border-right: 0px;\n" "border-left: 0px;\n"
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"border-right-color: rgb(255, 255, 255);" "border-radius:0px"));
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break;
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case 2:
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m_lineEidt[i]->setStyleSheet(QLatin1String( "border:1px solid #536874;\n" "border-left-color: rgb(255, 255, 255);\n"
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"border-top-color: rgb(0, 0, 0);\n" "border-bottom-color: rgb(0, 0, 0);\n" "border-right: 0px;\n" "border-left: 0px;\n"
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"border-right-color: rgb(255, 255, 255);" "border-radius:0px"));
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break;
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case 3:
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m_lineEidt[i]->setStyleSheet(QLatin1String( "border:1px solid #536874;\n" "border-left-color: rgb(255, 255, 255);\n"
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"border-top-color: rgb(0, 0, 0);\n" "border-bottom-color: rgb(0, 0, 0);\n" "border-left: 0px;\n"
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"border-right-color: rgb(0, 0, 0);" "border-radius:0px"));
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break;
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default:
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break;
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}
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pHBox->addWidget(m_lineEidt[i]);
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}
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this->setReadOnly(true);
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m_Color=Qt::white;
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connect(m_lineEidt[0],SIGNAL(textChanged(const QString &)),this,SLOT(OnLineEdit1TextChanged(const QString &)));
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connect(m_lineEidt[1],SIGNAL(textChanged(const QString &)),this,SLOT(OnLineEdit2TextChanged(const QString &)));
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connect(m_lineEidt[2],SIGNAL(textChanged(const QString &)),this,SLOT(OnLineEdit3TextChanged(const QString &)));
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connect(m_lineEidt[3],SIGNAL(textChanged(const QString &)),this,SLOT(OnLineEdit4TextChanged(const QString &)));
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}
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QIPLineEdit::~QIPLineEdit() {
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m_lineEidt[0]->deleteLater();
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m_lineEidt[1]->deleteLater();
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m_lineEidt[2]->deleteLater();
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m_lineEidt[3]->deleteLater();
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pHBox->deleteLater();
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}
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void QIPLineEdit::MySetColor(QColor cr)
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{
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m_Color=cr;
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}
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void QIPLineEdit::OnLineEdit1TextChanged(const QString & strtemp)
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{
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if(strtemp.right(1)=="."||strtemp.right(1)=="。")
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{
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m_lineEidt[0]->setText(strtemp.left(strtemp.length()-1));
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m_lineEidt[0 + 1]->setFocus();
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m_lineEidt[0 + 1]->setCursorPosition(0);
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}
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}
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void QIPLineEdit::OnLineEdit2TextChanged(const QString & strtemp)
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{
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if(strtemp.right(1)=="."||strtemp.right(1)=="。")
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{
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m_lineEidt[1]->setText(strtemp.left(strtemp.length()-1));
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m_lineEidt[1 + 1]->setFocus();
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m_lineEidt[1 + 1]->setCursorPosition(0);
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}
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}
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void QIPLineEdit::OnLineEdit3TextChanged(const QString & strtemp)
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{
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if(strtemp.right(1)=="."||strtemp.right(1)=="。")
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{
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m_lineEidt[2]->setText(strtemp.left(strtemp.length()-1));
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m_lineEidt[2 + 1]->setFocus();
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m_lineEidt[2 + 1]->setCursorPosition(0);
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}
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}
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void QIPLineEdit::OnLineEdit4TextChanged(const QString & strtemp)
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{
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if(strtemp.right(1)=="."||strtemp.right(1)=="。")
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{
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m_lineEidt[3]->setText(strtemp.left(strtemp.length()-1));
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}
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}
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void QIPLineEdit::paintEvent(QPaintEvent *event) {
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QWidget::paintEvent(event);
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QPainter painter(this);
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QBrush brush;
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int width = 0;
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for(int i = 0; i < 3; i++) {
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brush.setStyle(Qt::BrushStyle::SolidPattern);
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//将两个lineEdit之间的空隙绘制成白色
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brush.setColor(m_Color);
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painter.setPen(m_Color);
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painter.setBrush(brush);
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painter.drawRect(m_lineEidt[i]->x() + m_lineEidt[i]->width(), m_lineEidt[i]->y(), SPACE, height());
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//绘制空隙的边框
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painter.setPen(Qt::black);
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painter.drawLine(0, 0, this->width(), 0);
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painter.drawLine(0, this->height() - 1, this->width(), this->height() - 1);
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//绘制小黑点
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brush.setColor(Qt::black);
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painter.setPen(QPen());
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painter.setBrush(brush);
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width += m_lineEidt[i]->width() + (i == 0 ? 2 : SPACE);//布局的间隔
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painter.drawEllipse(width, height() / 2 + 4, 1, 1);
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}
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}
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int QIPLineEdit::getIndex(QLineEdit *pEdit){
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int index = -1;
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for(int i = 0; i < 4; i++) if(pEdit == m_lineEidt[i]) index = i;
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return index;
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}
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bool QIPLineEdit::eventFilter(QObject *obj, QEvent *ev) {
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if(children().contains(obj) && QEvent::KeyPress == ev->type()) {
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QKeyEvent *keyEvent = dynamic_cast<QKeyEvent *>(ev);
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QLineEdit *pEdit = qobject_cast<QLineEdit *>(obj);
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switch (keyEvent->key()) {
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case Qt::Key_0:
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case Qt::Key_1:
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case Qt::Key_2:
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case Qt::Key_3:
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case Qt::Key_4:
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case Qt::Key_5:
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case Qt::Key_6:
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case Qt::Key_7:
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case Qt::Key_8:
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case Qt::Key_9:
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{
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QString strText = pEdit->text();
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if (pEdit->selectedText().length())
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{
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pEdit->text().replace(pEdit->selectedText(), QChar(keyEvent->key()));
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}
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else if (strText.length() == 2 || (strText.length() < 2 && strText.toInt() * 10 > 255))
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{
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int index = getIndex(pEdit);
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if (index != -1 && index != 3)
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{
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m_lineEidt[index + 1]->setFocus();
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m_lineEidt[index + 1]->selectAll();
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}
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}
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else if (strText.length() == 2 && strText.toInt() * 10 < 255)
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{
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if (Qt::Key_0 == keyEvent->key() && strText.toInt())
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{
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pEdit->setText(strText.insert(pEdit->cursorPosition(), QChar(Qt::Key_0)));
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}
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}
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return QWidget::eventFilter(obj, ev);
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}
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break;
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case Qt::Key_Backspace:
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{
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QString strText = pEdit->text();
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if (!strText.length() || (strText.length() && !pEdit->cursorPosition()))
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{
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int index = getIndex(pEdit);
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if (index != -1 && index != 0)
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{
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m_lineEidt[index - 1]->setFocus();
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int length = m_lineEidt[index - 1]->text().length();
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m_lineEidt[index - 1]->setCursorPosition(length ? length : 0);
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}
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}
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return QWidget::eventFilter(obj, ev);
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}
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break;
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case Qt::Key_Left:
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{
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if (!pEdit->cursorPosition())
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{
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int index = getIndex(pEdit);
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if (index != -1 && index != 0)
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{
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m_lineEidt[index - 1]->setFocus();
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int length = m_lineEidt[index - 1]->text().length();
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m_lineEidt[index - 1]->setCursorPosition(length ? length : 0);
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}
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}
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return QWidget::eventFilter(obj, ev);
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}
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break;
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case Qt::Key_Right:
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{
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if (pEdit->cursorPosition() == pEdit->text().length())
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{
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int index = getIndex(pEdit);
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if (index != -1 && index != 3)
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{
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m_lineEidt[index + 1]->setFocus();
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m_lineEidt[index + 1]->setCursorPosition(0);
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}
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}
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return QWidget::eventFilter(obj, ev);
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}
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break;
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default:
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break;
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}
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}
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return false;
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}
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void QIPLineEdit::setText(const QString &strIP)
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{
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if (!isTextValid(strIP))
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{
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QMessageBox::warning(this, "Attention", "Your IP Address is Invalid!["+strIP+"]", QMessageBox::StandardButton::Ok);
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return;
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}
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else
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{
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int i = 0;
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QStringList ipList = strIP.split(".");
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foreach (QString ip, ipList)
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{
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m_lineEidt[i]->setText(ip);
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i++;
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}
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}
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}
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bool QIPLineEdit::isTextValid(const QString &strIP) {
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QRegExp rx2("\\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\b");
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return rx2.exactMatch(strIP);
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}
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QString QIPLineEdit::text() const
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{
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QString strIP;
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for (int i = 0; i < 4; i++)
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{
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strIP.append(m_lineEidt[i]->text());
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if (i < 3)
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{
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strIP.append(".");
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}
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}
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return strIP;
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}
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void QIPLineEdit::MyClear()
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{
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m_lineEidt[0]->clear();
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m_lineEidt[1]->clear();
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m_lineEidt[2]->clear();
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m_lineEidt[3]->clear();
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}
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