window.cpp 范例文件

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#include <QtWidgets>
#include "window.h"
Window::Window()
{
    QGroupBox *echoGroup = new QGroupBox(tr("Echo"));
    QLabel *echoLabel = new QLabel(tr("Mode:"));
    QComboBox *echoComboBox = new QComboBox;
    echoComboBox->addItem(tr("Normal"));
    echoComboBox->addItem(tr("Password"));
    echoComboBox->addItem(tr("PasswordEchoOnEdit"));
    echoComboBox->addItem(tr("No Echo"));
    echoLineEdit = new QLineEdit;
    echoLineEdit->setPlaceholderText("Placeholder Text");
    echoLineEdit->setFocus();
    QGroupBox *validatorGroup = new QGroupBox(tr("Validator"));
    QLabel *validatorLabel = new QLabel(tr("Type:"));
    QComboBox *validatorComboBox = new QComboBox;
    validatorComboBox->addItem(tr("No validator"));
    validatorComboBox->addItem(tr("Integer validator"));
    validatorComboBox->addItem(tr("Double validator"));
    validatorLineEdit = new QLineEdit;
    validatorLineEdit->setPlaceholderText("Placeholder Text");
    QGroupBox *alignmentGroup = new QGroupBox(tr("Alignment"));
    QLabel *alignmentLabel = new QLabel(tr("Type:"));
    QComboBox *alignmentComboBox = new QComboBox;
    alignmentComboBox->addItem(tr("Left"));
    alignmentComboBox->addItem(tr("Centered"));
    alignmentComboBox->addItem(tr("Right"));
    alignmentLineEdit = new QLineEdit;
    alignmentLineEdit->setPlaceholderText("Placeholder Text");
    QGroupBox *inputMaskGroup = new QGroupBox(tr("Input mask"));
    QLabel *inputMaskLabel = new QLabel(tr("Type:"));
    QComboBox *inputMaskComboBox = new QComboBox;
    inputMaskComboBox->addItem(tr("No mask"));
    inputMaskComboBox->addItem(tr("Phone number"));
    inputMaskComboBox->addItem(tr("ISO date"));
    inputMaskComboBox->addItem(tr("License key"));
    inputMaskLineEdit = new QLineEdit;
    inputMaskLineEdit->setPlaceholderText("Placeholder Text");
    QGroupBox *accessGroup = new QGroupBox(tr("Access"));
    QLabel *accessLabel = new QLabel(tr("Read-only:"));
    QComboBox *accessComboBox = new QComboBox;
    accessComboBox->addItem(tr("False"));
    accessComboBox->addItem(tr("True"));
    accessLineEdit = new QLineEdit;
    accessLineEdit->setPlaceholderText("Placeholder Text");
    connect(echoComboBox, SIGNAL(activated(int)),
            this, SLOT(echoChanged(int)));
    connect(validatorComboBox, SIGNAL(activated(int)),
            this, SLOT(validatorChanged(int)));
    connect(alignmentComboBox, SIGNAL(activated(int)),
            this, SLOT(alignmentChanged(int)));
    connect(inputMaskComboBox, SIGNAL(activated(int)),
            this, SLOT(inputMaskChanged(int)));
    connect(accessComboBox, SIGNAL(activated(int)),
            this, SLOT(accessChanged(int)));
    QGridLayout *echoLayout = new QGridLayout;
    echoLayout->addWidget(echoLabel, 0, 0);
    echoLayout->addWidget(echoComboBox, 0, 1);
    echoLayout->addWidget(echoLineEdit, 1, 0, 1, 2);
    echoGroup->setLayout(echoLayout);
    QGridLayout *validatorLayout = new QGridLayout;
    validatorLayout->addWidget(validatorLabel, 0, 0);
    validatorLayout->addWidget(validatorComboBox, 0, 1);
    validatorLayout->addWidget(validatorLineEdit, 1, 0, 1, 2);
    validatorGroup->setLayout(validatorLayout);
    QGridLayout *alignmentLayout = new QGridLayout;
    alignmentLayout->addWidget(alignmentLabel, 0, 0);
    alignmentLayout->addWidget(alignmentComboBox, 0, 1);
    alignmentLayout->addWidget(alignmentLineEdit, 1, 0, 1, 2);
    alignmentGroup-> setLayout(alignmentLayout);
    QGridLayout *inputMaskLayout = new QGridLayout;
    inputMaskLayout->addWidget(inputMaskLabel, 0, 0);
    inputMaskLayout->addWidget(inputMaskComboBox, 0, 1);
    inputMaskLayout->addWidget(inputMaskLineEdit, 1, 0, 1, 2);
    inputMaskGroup->setLayout(inputMaskLayout);
    QGridLayout *accessLayout = new QGridLayout;
    accessLayout->addWidget(accessLabel, 0, 0);
    accessLayout->addWidget(accessComboBox, 0, 1);
    accessLayout->addWidget(accessLineEdit, 1, 0, 1, 2);
    accessGroup->setLayout(accessLayout);
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(echoGroup, 0, 0);
    layout->addWidget(validatorGroup, 1, 0);
    layout->addWidget(alignmentGroup, 2, 0);
    layout->addWidget(inputMaskGroup, 0, 1);
    layout->addWidget(accessGroup, 1, 1);
    setLayout(layout);
    setWindowTitle(tr("Line Edits"));
}
void Window::echoChanged(int index)
{
    switch (index) {
    case 0:
        echoLineEdit->setEchoMode(QLineEdit::Normal);
        break;
    case 1:
        echoLineEdit->setEchoMode(QLineEdit::Password);
        break;
    case 2:
        echoLineEdit->setEchoMode(QLineEdit::PasswordEchoOnEdit);
        break;
    case 3:
        echoLineEdit->setEchoMode(QLineEdit::NoEcho);
    }
}
void Window::validatorChanged(int index)
{
    switch (index) {
    case 0:
        validatorLineEdit->setValidator(0);
        break;
    case 1:
        validatorLineEdit->setValidator(new QIntValidator(
            validatorLineEdit));
        break;
    case 2:
        validatorLineEdit->setValidator(new QDoubleValidator(-999.0,
            999.0, 2, validatorLineEdit));
    }
    validatorLineEdit->clear();
}
void Window::alignmentChanged(int index)
{
    switch (index) {
    case 0:
        alignmentLineEdit->setAlignment(Qt::AlignLeft);
        break;
    case 1:
        alignmentLineEdit->setAlignment(Qt::AlignCenter);
        break;
    case 2:
        alignmentLineEdit->setAlignment(Qt::AlignRight);
    }
}
void Window::inputMaskChanged(int index)
{
    switch (index) {
    case 0:
        inputMaskLineEdit->setInputMask("");
        break;
    case 1:
        inputMaskLineEdit->setInputMask("+99 99 99 99 99;_");
        break;
    case 2:
        inputMaskLineEdit->setInputMask("0000-00-00");
        inputMaskLineEdit->setText("00000000");
        inputMaskLineEdit->setCursorPosition(0);
        break;
    case 3:
        inputMaskLineEdit->setInputMask(">AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;#");
    }
}
void Window::accessChanged(int index)
{
    switch (index) {
    case 0:
        accessLineEdit->setReadOnly(false);
        break;
    case 1:
        accessLineEdit->setReadOnly(true);
    }
}