Qt:Документация 4.3.2/dialogs-findfiles-window-cpp
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[править] window.cpp Example File
dialogs/findfiles/window.cpp
/**************************************************************************** ** ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/ ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.0, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** In addition, as a special exception, Trolltech, as the sole copyright ** holder for Qt Designer, grants users of the Qt/Eclipse Integration ** plug-in the right for the Qt/Eclipse Integration to link to ** functionality provided by Qt Designer and its related libraries. ** ** Trolltech reserves all rights not expressly granted herein. ** ** Trolltech ASA (c) 2007 ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include <QtGui> #include "window.h" Window::Window(QWidget *parent) : QDialog(parent) { browseButton = createButton(tr("&Browse..."), SLOT(browse())); findButton = createButton(tr("&Find"), SLOT(find())); fileComboBox = createComboBox(tr("*")); textComboBox = createComboBox(); directoryComboBox = createComboBox(QDir::currentPath()); fileLabel = new QLabel(tr("Named:")); textLabel = new QLabel(tr("Containing text:")); directoryLabel = new QLabel(tr("In directory:")); filesFoundLabel = new QLabel; createFilesTable(); QHBoxLayout *buttonsLayout = new QHBoxLayout; buttonsLayout->addStretch(); buttonsLayout->addWidget(findButton); QGridLayout *mainLayout = new QGridLayout; mainLayout->addWidget(fileLabel, 0, 0); mainLayout->addWidget(fileComboBox, 0, 1, 1, 2); mainLayout->addWidget(textLabel, 1, 0); mainLayout->addWidget(textComboBox, 1, 1, 1, 2); mainLayout->addWidget(directoryLabel, 2, 0); mainLayout->addWidget(directoryComboBox, 2, 1); mainLayout->addWidget(browseButton, 2, 2); mainLayout->addWidget(filesTable, 3, 0, 1, 3); mainLayout->addWidget(filesFoundLabel, 4, 0); mainLayout->addLayout(buttonsLayout, 5, 0, 1, 3); setLayout(mainLayout); setWindowTitle(tr("Find Files")); resize(700, 300); } void Window::browse() { QString directory = QFileDialog::getExistingDirectory(this, tr("Find Files"), QDir::currentPath()); if (!directory.isEmpty()) { directoryComboBox->addItem(directory); directoryComboBox->setCurrentIndex(directoryComboBox->currentIndex() + 1); } } void Window::find() { filesTable->setRowCount(0); QString fileName = fileComboBox->currentText(); QString text = textComboBox->currentText(); QString path = directoryComboBox->currentText(); QDir directory = QDir(path); QStringList files; if (fileName.isEmpty()) fileName = "*"; files = directory.entryList(QStringList(fileName), QDir::Files | QDir::NoSymLinks); if (!text.isEmpty()) files = findFiles(directory, files, text); showFiles(directory, files); } QStringList Window::findFiles(const QDir &directory, const QStringList &files, const QString &text) { QProgressDialog progressDialog(this); progressDialog.setCancelButtonText(tr("&Cancel")); progressDialog.setRange(0, files.size()); progressDialog.setWindowTitle(tr("Find Files")); QStringList foundFiles; for (int i = 0; i < files.size(); ++i) { progressDialog.setValue(i); progressDialog.setLabelText(tr("Searching file number %1 of %2...") .arg(i).arg(files.size())); qApp->processEvents(); if (progressDialog.wasCanceled()) break; QFile file(directory.absoluteFilePath(files[i])); if (file.open(QIODevice::ReadOnly)) { QString line; QTextStream in(&file); while (!in.atEnd()) { if (progressDialog.wasCanceled()) break; line = in.readLine(); if (line.contains(text)) { foundFiles << files[i]; break; } } } } return foundFiles; } void Window::showFiles(const QDir &directory, const QStringList &files) { for (int i = 0; i < files.size(); ++i) { QFile file(directory.absoluteFilePath(files[i])); qint64 size = QFileInfo(file).size(); QTableWidgetItem *fileNameItem = new QTableWidgetItem(files[i]); fileNameItem->setFlags(Qt::ItemIsEnabled); QTableWidgetItem *sizeItem = new QTableWidgetItem(tr("%1 KB") .arg(int((size + 1023) / 1024))); sizeItem->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter); sizeItem->setFlags(Qt::ItemIsEnabled); int row = filesTable->rowCount(); filesTable->insertRow(row); filesTable->setItem(row, 0, fileNameItem); filesTable->setItem(row, 1, sizeItem); } filesFoundLabel->setText(tr("%1 file(s) found").arg(files.size())); } QPushButton *Window::createButton(const QString &text, const char *member) { QPushButton *button = new QPushButton(text); connect(button, SIGNAL(clicked()), this, member); return button; } QComboBox *Window::createComboBox(const QString &text) { QComboBox *comboBox = new QComboBox; comboBox->setEditable(true); comboBox->addItem(text); comboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); return comboBox; } void Window::createFilesTable() { filesTable = new QTableWidget(0, 2); QStringList labels; labels << tr("File Name") << tr("Size"); filesTable->setHorizontalHeaderLabels(labels); filesTable->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch); filesTable->verticalHeader()->hide(); filesTable->setShowGrid(false); }
Copyright © 2007 Trolltech | Trademarks | Qt 4.3.2
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