diff options
Diffstat (limited to 'examples/itemviews/fetchmore')
-rw-r--r-- | examples/itemviews/fetchmore/fetchmore.pro | 12 | ||||
-rw-r--r-- | examples/itemviews/fetchmore/filelistmodel.cpp | 115 | ||||
-rw-r--r-- | examples/itemviews/fetchmore/filelistmodel.h | 75 | ||||
-rw-r--r-- | examples/itemviews/fetchmore/main.cpp | 50 | ||||
-rw-r--r-- | examples/itemviews/fetchmore/window.cpp | 81 | ||||
-rw-r--r-- | examples/itemviews/fetchmore/window.h | 64 |
6 files changed, 397 insertions, 0 deletions
diff --git a/examples/itemviews/fetchmore/fetchmore.pro b/examples/itemviews/fetchmore/fetchmore.pro new file mode 100644 index 0000000000..2951d93faf --- /dev/null +++ b/examples/itemviews/fetchmore/fetchmore.pro @@ -0,0 +1,12 @@ +HEADERS = filelistmodel.h \ + window.h +SOURCES = filelistmodel.cpp \ + main.cpp \ + window.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/itemviews/fetchmore +sources.files = $$SOURCES $$HEADERS *.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/itemviews/fetchmore +INSTALLS += target sources + diff --git a/examples/itemviews/fetchmore/filelistmodel.cpp b/examples/itemviews/fetchmore/filelistmodel.cpp new file mode 100644 index 0000000000..727c658a3d --- /dev/null +++ b/examples/itemviews/fetchmore/filelistmodel.cpp @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation and its Subsidiary(-ies) 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 "filelistmodel.h" +#include <QApplication> +#include <QPalette> +#include <QBrush> +#include <QDir> + +FileListModel::FileListModel(QObject *parent) + : QAbstractListModel(parent) +{ +} + +//![4] +int FileListModel::rowCount(const QModelIndex & /* parent */) const +{ + return fileCount; +} + +QVariant FileListModel::data(const QModelIndex &index, int role) const +{ + if (!index.isValid()) + return QVariant(); + + if (index.row() >= fileList.size() || index.row() < 0) + return QVariant(); + + if (role == Qt::DisplayRole) + return fileList.at(index.row()); + else if (role == Qt::BackgroundRole) { + int batch = (index.row() / 100) % 2; + if (batch == 0) + return qApp->palette().base(); + else + return qApp->palette().alternateBase(); + } + return QVariant(); +} +//![4] + +//![1] +bool FileListModel::canFetchMore(const QModelIndex & /* index */) const +{ + if (fileCount < fileList.size()) + return true; + else + return false; +} +//![1] + +//![2] +void FileListModel::fetchMore(const QModelIndex & /* index */) +{ + int remainder = fileList.size() - fileCount; + int itemsToFetch = qMin(100, remainder); + + beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch-1); + + fileCount += itemsToFetch; + + endInsertRows(); + + emit numberPopulated(itemsToFetch); +} +//![2] + +//![0] +void FileListModel::setDirPath(const QString &path) +{ + QDir dir(path); + + fileList = dir.entryList(); + fileCount = 0; + reset(); +} +//![0] + diff --git a/examples/itemviews/fetchmore/filelistmodel.h b/examples/itemviews/fetchmore/filelistmodel.h new file mode 100644 index 0000000000..9f0898eb8e --- /dev/null +++ b/examples/itemviews/fetchmore/filelistmodel.h @@ -0,0 +1,75 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation and its Subsidiary(-ies) 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef FILELISTMODEL_H +#define FILELISTMODEL_H + +#include <QAbstractListModel> +#include <QList> +#include <QStringList> + +//![0] +class FileListModel : public QAbstractListModel +{ + Q_OBJECT + +public: + FileListModel(QObject *parent = 0); + + int rowCount(const QModelIndex &parent = QModelIndex()) const; + QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const; + +signals: + void numberPopulated(int number); + +public slots: + void setDirPath(const QString &path); + +protected: + bool canFetchMore(const QModelIndex &parent) const; + void fetchMore(const QModelIndex &parent); + +private: + QStringList fileList; + int fileCount; +}; +//![0] + +#endif diff --git a/examples/itemviews/fetchmore/main.cpp b/examples/itemviews/fetchmore/main.cpp new file mode 100644 index 0000000000..aedfd9f8d3 --- /dev/null +++ b/examples/itemviews/fetchmore/main.cpp @@ -0,0 +1,50 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation and its Subsidiary(-ies) 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 "window.h" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + Window window; + window.show(); + return app.exec(); +} diff --git a/examples/itemviews/fetchmore/window.cpp b/examples/itemviews/fetchmore/window.cpp new file mode 100644 index 0000000000..29dbf12b21 --- /dev/null +++ b/examples/itemviews/fetchmore/window.cpp @@ -0,0 +1,81 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QtGui> +#include "filelistmodel.h" +#include "window.h" + +Window::Window(QWidget *parent) + : QWidget(parent) +{ + FileListModel *model = new FileListModel(this); + model->setDirPath(QLibraryInfo::location(QLibraryInfo::PrefixPath)); + + QLabel *label = new QLabel(tr("&Directory:")); + QLineEdit *lineEdit = new QLineEdit; + label->setBuddy(lineEdit); + + QListView *view = new QListView; + view->setModel(model); + + logViewer = new QTextBrowser; + logViewer->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred)); + + connect(lineEdit, SIGNAL(textChanged(QString)), + model, SLOT(setDirPath(QString))); + connect(lineEdit, SIGNAL(textChanged(QString)), + logViewer, SLOT(clear())); + connect(model, SIGNAL(numberPopulated(int)), + this, SLOT(updateLog(int))); + + QGridLayout *layout = new QGridLayout; + layout->addWidget(label, 0, 0); + layout->addWidget(lineEdit, 0, 1); + layout->addWidget(view, 1, 0, 1, 2); + layout->addWidget(logViewer, 2, 0, 1, 2); + + setLayout(layout); + setWindowTitle(tr("Fetch More Example")); +} + +void Window::updateLog(int number) +{ + logViewer->append(tr("%1 items added.").arg(number)); +} diff --git a/examples/itemviews/fetchmore/window.h b/examples/itemviews/fetchmore/window.h new file mode 100644 index 0000000000..f726caedcf --- /dev/null +++ b/examples/itemviews/fetchmore/window.h @@ -0,0 +1,64 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation and its Subsidiary(-ies) 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef WINDOW_H +#define WINDOW_H + +#include <QWidget> + +QT_BEGIN_NAMESPACE +class QTextBrowser; +QT_END_NAMESPACE + +class Window : public QWidget +{ + Q_OBJECT + +public: + Window(QWidget *parent = 0); + +public slots: + void updateLog(int number); + +private: + QTextBrowser *logViewer; +}; + +#endif |