init

customcontrols/mipaddresseditor.cpp

@@ -0,0 +1,147 @@
+#include "mipaddresseditor.h"
+#include <QStyleOption>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QEvent>
+#include <QKeyEvent>
+#include <QPainter>
+
+
+MIpAddressEditor::MIpAddressEditor(QWidget* parent) :
+    QWidget(parent), focused(false)
+{
+    setStyleSheet("* { background-color:white; }");
+    QHBoxLayout* lay = new QHBoxLayout();
+    lay->setContentsMargins(1, 1, 1, 1);
+    lay->setSpacing(0);
+    QLabel* label1 = new QLabel(".", this);
+    QLabel* label2 = new QLabel(".", this);
+    QLabel* label3 = new QLabel(".", this);
+    leIp1 = new QLineEdit(this);
+    leIp1->setStyleSheet("QLineEdit { border:none; }");
+    leIp1->setAlignment(Qt::AlignCenter);
+    leIp2 = new QLineEdit(this);
+    leIp2->setStyleSheet("QLineEdit { border:none; }");
+    leIp2->setAlignment(Qt::AlignCenter);
+    leIp3 = new QLineEdit(this);
+    leIp3->setStyleSheet("QLineEdit { border:none; }");
+    leIp3->setAlignment(Qt::AlignCenter);
+    leIp4 = new QLineEdit(this);
+    leIp4->setStyleSheet("QLineEdit { border:none; }");
+    leIp4->setAlignment(Qt::AlignCenter);
+    lay->addWidget(leIp1);
+    lay->addWidget(label1);
+    lay->addWidget(leIp2);
+    lay->addWidget(label2);
+    lay->addWidget(leIp3);
+    lay->addWidget(label3);
+    lay->addWidget(leIp4);
+    setLayout(lay);
+
+    QIntValidator* validator = new QIntValidator(this);
+    validator->setRange(0, 255);
+    leIp1->setValidator(validator);
+    leIp2->setValidator(validator);
+    leIp3->setValidator(validator);
+    leIp4->setValidator(validator);
+    leIp1->installEventFilter(this);
+    leIp2->installEventFilter(this);
+    leIp3->installEventFilter(this);
+    leIp4->installEventFilter(this);
+    connect(leIp1, &QLineEdit::textChanged, this, &MIpAddressEditor::leIpTextChanged);
+    connect(leIp2, &QLineEdit::textChanged, this, &MIpAddressEditor::leIpTextChanged);
+    connect(leIp3, &QLineEdit::textChanged, this, &MIpAddressEditor::leIpTextChanged);
+    connect(leIp4, &QLineEdit::textChanged, this, &MIpAddressEditor::leIpTextChanged);
+}
+
+void MIpAddressEditor::setIp(const QString& ip)
+{
+    QStringList nums = ip.split('.');
+    if (nums.size() == 4)
+    {
+        leIp1->setText(nums[0]);
+        leIp2->setText(nums[1]);
+        leIp3->setText(nums[2]);
+        leIp4->setText(nums[3]);
+    }
+}
+
+QString MIpAddressEditor::ip() const
+{
+    QString ipAddr = QString("%1.%2.%3.%4")
+        .arg(leIp1->text(), leIp2->text(), leIp3->text(), leIp4->text());
+    return ipAddr;
+}
+
+bool MIpAddressEditor::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == QEvent::KeyPress)
+    {
+        const QVarLengthArray<QWidget*, 4> editors = { leIp1, leIp2, leIp3, leIp4 };
+        QKeyEvent* keyEvent = dynamic_cast<QKeyEvent*>(event);
+        QWidget* target = dynamic_cast<QWidget*>(watched);
+        if (keyEvent->key() == Qt::Key_Space)
+        {
+            if (target != editors.back())
+            {
+                editors[editors.indexOf(target) + 1]->setFocus();
+            }
+            return true;
+        }
+    }
+    else if (event->type() == QEvent::FocusIn)
+    {
+        focused = true;
+        update();
+    }
+    else if (event->type() == QEvent::FocusOut)
+    {
+        if (!leIp1->hasFocus() && !leIp2->hasFocus() &&
+            !leIp3->hasFocus() && !leIp4->hasFocus())
+        {
+            focused = false;
+            update();
+        }
+    }
+    return false;
+}
+
+void MIpAddressEditor::leIpTextChanged(const QString& text)
+{
+    if (text.size() >= 3)
+    {
+        const QVarLengthArray<QWidget*, 4> editors = { leIp1, leIp2, leIp3, leIp4 };
+        QWidget* src = dynamic_cast<QWidget*>(sender());
+        if (src != editors.back())
+        {
+            editors[editors.indexOf(src) + 1]->setFocus();
+        }
+    }
+
+    emit IPChanged(ip());
+}
+
+void MIpAddressEditor::paintEvent(QPaintEvent*)
+{
+    QStyleOption opt;
+    opt.init(this);
+    QPainter painter(this);
+    style()->drawPrimitive(QStyle::PE_Widget, &opt, &painter, this);
+    QPalette pale = palette();
+    painter.setBrush(Qt::NoBrush);
+    if (focused)
+    {
+        painter.setPen(QPen(pale.highlight(), 1));
+        painter.drawRect(0, 0, width() - 1, height() - 1);
+    }
+    else
+    {
+        painter.setPen(QPen(pale.mid(), 1));
+        painter.drawRect(0, 0, width() - 1, height() - 1);
+    }
+}
+
+QSize MIpAddressEditor::sizeHint() const
+{
+    return QSize(160, 24);
+}