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Diffstat (limited to 'examples/quickcontrols/controls/filesystembrowser/main.cpp')
| -rw-r--r-- | examples/quickcontrols/controls/filesystembrowser/main.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/examples/quickcontrols/controls/filesystembrowser/main.cpp b/examples/quickcontrols/controls/filesystembrowser/main.cpp new file mode 100644 index 00000000..e9c63c20 --- /dev/null +++ b/examples/quickcontrols/controls/filesystembrowser/main.cpp @@ -0,0 +1,152 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QApplication> +#include <QQmlApplicationEngine> +#include <QtQml> +#include <QFileSystemModel> +#include <QDateTime> +#include <QDesktopServices> +#include <QUrl> + +static inline QString permissionString(const QFileInfo &fi) +{ + const QFile::Permissions permissions = fi.permissions(); + QString result = QLatin1String("----------"); + if (fi.isSymLink()) + result[0] = QLatin1Char('l'); + else if (fi.isDir()) + result[0] = QLatin1Char('d'); + if (permissions & QFileDevice::ReadUser) + result[1] = QLatin1Char('r'); + if (permissions & QFileDevice::WriteUser) + result[2] = QLatin1Char('w'); + if (permissions & QFileDevice::ExeUser) + result[3] = QLatin1Char('x'); + if (permissions & QFileDevice::ReadGroup) + result[4] = QLatin1Char('r'); + if (permissions & QFileDevice::WriteGroup) + result[5] = QLatin1Char('w'); + if (permissions & QFileDevice::ExeGroup) + result[6] = QLatin1Char('x'); + if (permissions & QFileDevice::ReadOther) + result[7] = QLatin1Char('r'); + if (permissions & QFileDevice::WriteOther) + result[8] = QLatin1Char('w'); + if (permissions & QFileDevice::ExeOther) + result[9] = QLatin1Char('x'); + return result; +} + +static inline QString sizeString(const QFileInfo &fi) +{ + if (!fi.isFile()) + return QString(); + const qint64 size = fi.size(); + if (size > 1024 * 1024 * 10) + return QString::number(size / (1024 * 1024)) + QLatin1Char('M'); + if (size > 1024 * 10) + return QString::number(size / 1024) + QLatin1Char('K'); + return QString::number(size); +} + +class DisplayFileSystemModel : public QFileSystemModel { + Q_OBJECT +public: + explicit DisplayFileSystemModel(QObject *parent = Q_NULLPTR) + : QFileSystemModel(parent) {} + + enum Roles { + SizeRole = Qt::UserRole + 4, + DisplayableFilePermissionsRole = Qt::UserRole + 5, + LastModifiedRole = Qt::UserRole + 6, + UrlStringRole = Qt::UserRole + 7 + }; + Q_ENUM(Roles) + + QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const Q_DECL_OVERRIDE + { + if (index.isValid() && role >= SizeRole) { + switch (role) { + case SizeRole: + return QVariant(sizeString(fileInfo(index))); + case DisplayableFilePermissionsRole: + return QVariant(permissionString(fileInfo(index))); + case LastModifiedRole: + return QVariant(fileInfo(index).lastModified().toString(Qt::SystemLocaleShortDate)); + case UrlStringRole: + return QVariant(QUrl::fromLocalFile(filePath(index)).toString()); + default: + break; + } + } + return QFileSystemModel::data(index, role); + } + + QHash<int,QByteArray> roleNames() const Q_DECL_OVERRIDE + { + QHash<int, QByteArray> result = QFileSystemModel::roleNames(); + result.insert(SizeRole, QByteArrayLiteral("size")); + result.insert(DisplayableFilePermissionsRole, QByteArrayLiteral("displayableFilePermissions")); + result.insert(LastModifiedRole, QByteArrayLiteral("lastModified")); + return result; + } +}; + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + + QQmlApplicationEngine engine; + qmlRegisterUncreatableType<DisplayFileSystemModel>("io.qt.examples.quick.controls.filesystembrowser", 1, 0, + "FileSystemModel", "Cannot create a FileSystemModel instance."); + QFileSystemModel *fsm = new DisplayFileSystemModel(&engine); + fsm->setRootPath(QDir::homePath()); + fsm->setResolveSymlinks(true); + engine.rootContext()->setContextProperty("fileSystemModel", fsm); + engine.rootContext()->setContextProperty("rootPathIndex", fsm->index(fsm->rootPath())); + engine.load(QUrl(QStringLiteral("qrc:///main.qml"))); + if (engine.rootObjects().isEmpty()) + return -1; + + return app.exec(); +} + +#include "main.moc" |