window.cpp 范例文件

itemviews/basicsortfiltermodel/window.cpp
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#include <QtWidgets> #include "window.h" Window::Window() { proxyModel = new QSortFilterProxyModel; sourceView = new QTreeView; sourceView->setRootIsDecorated(false); sourceView->setAlternatingRowColors(true); proxyView = new QTreeView; proxyView->setRootIsDecorated(false); proxyView->setAlternatingRowColors(true); proxyView->setModel(proxyModel); proxyView->setSortingEnabled(true); sortCaseSensitivityCheckBox = new QCheckBox(tr("Case sensitive sorting")); filterCaseSensitivityCheckBox = new QCheckBox(tr("Case sensitive filter")); filterPatternLineEdit = new QLineEdit; filterPatternLabel = new QLabel(tr("&Filter pattern:")); filterPatternLabel->setBuddy(filterPatternLineEdit); filterSyntaxComboBox = new QComboBox; filterSyntaxComboBox->addItem(tr("Regular expression"), QRegExp::RegExp); filterSyntaxComboBox->addItem(tr("Wildcard"), QRegExp::Wildcard); filterSyntaxComboBox->addItem(tr("Fixed string"), QRegExp::FixedString); filterSyntaxLabel = new QLabel(tr("Filter &syntax:")); filterSyntaxLabel->setBuddy(filterSyntaxComboBox); filterColumnComboBox = new QComboBox; filterColumnComboBox->addItem(tr("Subject")); filterColumnComboBox->addItem(tr("Sender")); filterColumnComboBox->addItem(tr("Date")); filterColumnLabel = new QLabel(tr("Filter &column:")); filterColumnLabel->setBuddy(filterColumnComboBox); connect(filterPatternLineEdit, &QLineEdit::textChanged, this, &Window::filterRegExpChanged); connect(filterSyntaxComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &Window::filterRegExpChanged); connect(filterColumnComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &Window::filterColumnChanged); connect(filterCaseSensitivityCheckBox, &QAbstractButton::toggled, this, &Window::filterRegExpChanged); connect(sortCaseSensitivityCheckBox, &QAbstractButton::toggled, this, &Window::sortChanged); sourceGroupBox = new QGroupBox(tr("Original Model")); proxyGroupBox = new QGroupBox(tr("Sorted/Filtered Model")); QHBoxLayout *sourceLayout = new QHBoxLayout; sourceLayout->addWidget(sourceView); sourceGroupBox->setLayout(sourceLayout); QGridLayout *proxyLayout = new QGridLayout; proxyLayout->addWidget(proxyView, 0, 0, 1, 3); proxyLayout->addWidget(filterPatternLabel, 1, 0); proxyLayout->addWidget(filterPatternLineEdit, 1, 1, 1, 2); proxyLayout->addWidget(filterSyntaxLabel, 2, 0); proxyLayout->addWidget(filterSyntaxComboBox, 2, 1, 1, 2); proxyLayout->addWidget(filterColumnLabel, 3, 0); proxyLayout->addWidget(filterColumnComboBox, 3, 1, 1, 2); proxyLayout->addWidget(filterCaseSensitivityCheckBox, 4, 0, 1, 2); proxyLayout->addWidget(sortCaseSensitivityCheckBox, 4, 2); proxyGroupBox->setLayout(proxyLayout); QVBoxLayout *mainLayout = new QVBoxLayout; mainLayout->addWidget(sourceGroupBox); mainLayout->addWidget(proxyGroupBox); setLayout(mainLayout); setWindowTitle(tr("Basic Sort/Filter Model")); resize(500, 450); proxyView->sortByColumn(1, Qt::AscendingOrder); filterColumnComboBox->setCurrentIndex(1); filterPatternLineEdit->setText("Andy|Grace"); filterCaseSensitivityCheckBox->setChecked(true); sortCaseSensitivityCheckBox->setChecked(true); } void Window::setSourceModel(QAbstractItemModel *model) { proxyModel->setSourceModel(model); sourceView->setModel(model); } void Window::filterRegExpChanged() { QRegExp::PatternSyntax syntax = QRegExp::PatternSyntax(filterSyntaxComboBox->itemData( filterSyntaxComboBox->currentIndex()).toInt()); Qt::CaseSensitivity caseSensitivity = filterCaseSensitivityCheckBox->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive; QRegExp regExp(filterPatternLineEdit->text(), caseSensitivity, syntax); proxyModel->setFilterRegExp(regExp); } void Window::filterColumnChanged() { proxyModel->setFilterKeyColumn(filterColumnComboBox->currentIndex()); } void Window::sortChanged() { proxyModel->setSortCaseSensitivity( sortCaseSensitivityCheckBox->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive); }