Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

10 files changed, 878 insertions, 0 deletions

diff --git a/examples/itemviews/puzzle/example.jpg b/examples/itemviews/puzzle/example.jpg
new file mode 100644
index 0000000000..e09fb70757
--- /dev/null
+++ b/examples/itemviews/puzzle/example.jpg
diff --git a/examples/itemviews/puzzle/main.cpp b/examples/itemviews/puzzle/main.cpp
new file mode 100644
index 0000000000..60341948ab
--- /dev/null
+++ b/examples/itemviews/puzzle/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** 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 "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    Q_INIT_RESOURCE(puzzle);
+
+    QApplication app(argc, argv);
+    MainWindow window;
+    window.openImage(":/images/example.jpg");
+    window.show();
+    return app.exec();
+}
diff --git a/examples/itemviews/puzzle/mainwindow.cpp b/examples/itemviews/puzzle/mainwindow.cpp
new file mode 100644
index 0000000000..4d6da116bf
--- /dev/null
+++ b/examples/itemviews/puzzle/mainwindow.cpp
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** 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 <stdlib.h>
+
+#include "mainwindow.h"
+#include "piecesmodel.h"
+#include "puzzlewidget.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+{
+    setupMenus();
+    setupWidgets();
+    model = new PiecesModel(this);
+    piecesList->setModel(model);
+
+    setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
+    setWindowTitle(tr("Puzzle"));
+}
+
+void MainWindow::openImage(const QString &path)
+{
+    QString fileName = path;
+
+    if (fileName.isNull())
+        fileName = QFileDialog::getOpenFileName(this,
+            tr("Open Image"), "", tr("Image Files (*.png *.jpg *.bmp)"));
+
+    if (!fileName.isEmpty()) {
+        QPixmap newImage;
+        if (!newImage.load(fileName)) {
+            QMessageBox::warning(this, tr("Open Image"),
+                                 tr("The image file could not be loaded."),
+                                 QMessageBox::Cancel);
+            return;
+        }
+        puzzleImage = newImage;
+        setupPuzzle();
+    }
+}
+
+void MainWindow::setCompleted()
+{
+    QMessageBox::information(this, tr("Puzzle Completed"),
+        tr("Congratulations! You have completed the puzzle!\n"
+           "Click OK to start again."),
+        QMessageBox::Ok);
+
+    setupPuzzle();
+}
+
+void MainWindow::setupPuzzle()
+{
+    int size = qMin(puzzleImage.width(), puzzleImage.height());
+    puzzleImage = puzzleImage.copy((puzzleImage.width() - size)/2,
+        (puzzleImage.height() - size)/2, size, size).scaled(400,
+            400, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+
+    qsrand(QCursor::pos().x() ^ QCursor::pos().y());
+
+    model->addPieces(puzzleImage);
+    puzzleWidget->clear();
+}
+
+void MainWindow::setupMenus()
+{
+    QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
+
+    QAction *openAction = fileMenu->addAction(tr("&Open..."));
+    openAction->setShortcuts(QKeySequence::Open);
+
+    QAction *exitAction = fileMenu->addAction(tr("E&xit"));
+    exitAction->setShortcuts(QKeySequence::Quit);
+
+    QMenu *gameMenu = menuBar()->addMenu(tr("&Game"));
+
+    QAction *restartAction = gameMenu->addAction(tr("&Restart"));
+
+    connect(openAction, SIGNAL(triggered()), this, SLOT(openImage()));
+    connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
+    connect(restartAction, SIGNAL(triggered()), this, SLOT(setupPuzzle()));
+}
+
+void MainWindow::setupWidgets()
+{
+    QFrame *frame = new QFrame;
+    QHBoxLayout *frameLayout = new QHBoxLayout(frame);
+
+    piecesList = new QListView;
+    piecesList->setDragEnabled(true);
+    piecesList->setViewMode(QListView::IconMode);
+    piecesList->setIconSize(QSize(60, 60));
+    piecesList->setGridSize(QSize(80, 80));
+    piecesList->setSpacing(10);
+    piecesList->setMovement(QListView::Snap);
+    piecesList->setAcceptDrops(true);
+    piecesList->setDropIndicatorShown(true);
+
+    PiecesModel *model = new PiecesModel(this);
+    piecesList->setModel(model);
+
+    puzzleWidget = new PuzzleWidget;
+
+    connect(puzzleWidget, SIGNAL(puzzleCompleted()),
+            this, SLOT(setCompleted()), Qt::QueuedConnection);
+
+    frameLayout->addWidget(piecesList);
+    frameLayout->addWidget(puzzleWidget);
+    setCentralWidget(frame);
+}
diff --git a/examples/itemviews/puzzle/mainwindow.h b/examples/itemviews/puzzle/mainwindow.h
new file mode 100644
index 0000000000..e242adb173
--- /dev/null
+++ b/examples/itemviews/puzzle/mainwindow.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** 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 MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QPixmap>
+#include <QMainWindow>
+
+class PuzzleWidget;
+class PiecesModel;
+QT_BEGIN_NAMESPACE
+class QListView;
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = 0);
+
+public slots:
+    void openImage(const QString &path = QString());
+    void setupPuzzle();
+
+private slots:
+    void setCompleted();
+
+private:
+    void setupMenus();
+    void setupWidgets();
+
+    QPixmap puzzleImage;
+    QListView *piecesList;
+    PuzzleWidget *puzzleWidget;
+    PiecesModel *model;
+};
+
+#endif
diff --git a/examples/itemviews/puzzle/piecesmodel.cpp b/examples/itemviews/puzzle/piecesmodel.cpp
new file mode 100644
index 0000000000..4235050d9d
--- /dev/null
+++ b/examples/itemviews/puzzle/piecesmodel.cpp
@@ -0,0 +1,203 @@
+/****************************************************************************
+**
+** 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 "piecesmodel.h"
+
+PiecesModel::PiecesModel(QObject *parent)
+    : QAbstractListModel(parent)
+{
+}
+
+QVariant PiecesModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    if (role == Qt::DecorationRole)
+        return QIcon(pixmaps.value(index.row()).scaled(60, 60,
+                         Qt::KeepAspectRatio, Qt::SmoothTransformation));
+    else if (role == Qt::UserRole)
+        return pixmaps.value(index.row());
+    else if (role == Qt::UserRole + 1)
+        return locations.value(index.row());
+
+    return QVariant();
+}
+
+void PiecesModel::addPiece(const QPixmap &pixmap, const QPoint &location)
+{
+    int row;
+    if (int(2.0*qrand()/(RAND_MAX+1.0)) == 1)
+        row = 0;
+    else
+        row = pixmaps.size();
+
+    beginInsertRows(QModelIndex(), row, row);
+    pixmaps.insert(row, pixmap);
+    locations.insert(row, location);
+    endInsertRows();
+}
+
+Qt::ItemFlags PiecesModel::flags(const QModelIndex &index) const
+{
+    if (index.isValid())
+        return (Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsDragEnabled);
+
+    return Qt::ItemIsDropEnabled;
+}
+
+bool PiecesModel::removeRows(int row, int count, const QModelIndex &parent)
+{
+    if (parent.isValid())
+        return false;
+
+    if (row >= pixmaps.size() || row + count <= 0)
+        return false;
+
+    int beginRow = qMax(0, row);
+    int endRow = qMin(row + count - 1, pixmaps.size() - 1);
+
+    beginRemoveRows(parent, beginRow, endRow);
+
+    while (beginRow <= endRow) {
+        pixmaps.removeAt(beginRow);
+        locations.removeAt(beginRow);
+        ++beginRow;
+    }
+
+    endRemoveRows();
+    return true;
+}
+
+QStringList PiecesModel::mimeTypes() const
+{
+    QStringList types;
+    types << "image/x-puzzle-piece";
+    return types;
+}
+
+QMimeData *PiecesModel::mimeData(const QModelIndexList &indexes) const
+{
+    QMimeData *mimeData = new QMimeData();
+    QByteArray encodedData;
+
+    QDataStream stream(&encodedData, QIODevice::WriteOnly);
+
+    foreach (QModelIndex index, indexes) {
+        if (index.isValid()) {
+            QPixmap pixmap = qvariant_cast<QPixmap>(data(index, Qt::UserRole));
+            QPoint location = data(index, Qt::UserRole+1).toPoint();
+            stream << pixmap << location;
+        }
+    }
+
+    mimeData->setData("image/x-puzzle-piece", encodedData);
+    return mimeData;
+}
+
+bool PiecesModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
+                               int row, int column, const QModelIndex &parent)
+{
+    if (!data->hasFormat("image/x-puzzle-piece"))
+        return false;
+
+    if (action == Qt::IgnoreAction)
+        return true;
+
+    if (column > 0)
+        return false;
+
+    int endRow;
+
+    if (!parent.isValid()) {
+        if (row < 0)
+            endRow = pixmaps.size();
+        else
+            endRow = qMin(row, pixmaps.size());
+    } else
+        endRow = parent.row();
+
+    QByteArray encodedData = data->data("image/x-puzzle-piece");
+    QDataStream stream(&encodedData, QIODevice::ReadOnly);
+
+    while (!stream.atEnd()) {
+        QPixmap pixmap;
+        QPoint location;
+        stream >> pixmap >> location;
+
+        beginInsertRows(QModelIndex(), endRow, endRow);
+        pixmaps.insert(endRow, pixmap);
+        locations.insert(endRow, location);
+        endInsertRows();
+
+        ++endRow;
+    }
+
+    return true;
+}
+
+int PiecesModel::rowCount(const QModelIndex &parent) const
+{
+    if (parent.isValid())
+        return 0;
+    else
+        return pixmaps.size();
+}
+
+Qt::DropActions PiecesModel::supportedDropActions() const
+{
+    return Qt::CopyAction | Qt::MoveAction;
+}
+
+void PiecesModel::addPieces(const QPixmap& pixmap)
+{
+    beginRemoveRows(QModelIndex(), 0, 24);
+    pixmaps.clear();
+    locations.clear();
+    endRemoveRows();
+    for (int y = 0; y < 5; ++y) {
+        for (int x = 0; x < 5; ++x) {
+            QPixmap pieceImage = pixmap.copy(x*80, y*80, 80, 80);
+            addPiece(pieceImage, QPoint(x, y));
+        }
+    }
+}
diff --git a/examples/itemviews/puzzle/piecesmodel.h b/examples/itemviews/puzzle/piecesmodel.h
new file mode 100644
index 0000000000..30bbdf83b2
--- /dev/null
+++ b/examples/itemviews/puzzle/piecesmodel.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** 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 PIECESLIST_H
+#define PIECESLIST_H
+
+#include <QAbstractListModel>
+#include <QList>
+#include <QPixmap>
+#include <QPoint>
+#include <QStringList>
+
+QT_BEGIN_NAMESPACE
+class QMimeData;
+QT_END_NAMESPACE
+
+class PiecesModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+public:
+    PiecesModel(QObject *parent = 0);
+
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+    bool removeRows(int row, int count, const QModelIndex &parent);
+
+    bool dropMimeData(const QMimeData *data, Qt::DropAction action,
+                      int row, int column, const QModelIndex &parent);
+    QMimeData *mimeData(const QModelIndexList &indexes) const;
+    QStringList mimeTypes() const;
+    int rowCount(const QModelIndex &parent) const;
+    Qt::DropActions supportedDropActions() const;
+
+    void addPiece(const QPixmap &pixmap, const QPoint &location);
+    void addPieces(const QPixmap& pixmap);
+
+private:
+    QList<QPoint> locations;
+    QList<QPixmap> pixmaps;
+};
+
+#endif
diff --git a/examples/itemviews/puzzle/puzzle.pro b/examples/itemviews/puzzle/puzzle.pro
new file mode 100644
index 0000000000..3939397b7c
--- /dev/null
+++ b/examples/itemviews/puzzle/puzzle.pro
@@ -0,0 +1,21 @@
+HEADERS     = mainwindow.h \
+              piecesmodel.h \
+              puzzlewidget.h
+RESOURCES   = puzzle.qrc
+SOURCES     = main.cpp \
+              mainwindow.cpp \
+              piecesmodel.cpp \
+              puzzlewidget.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/itemviews/puzzle
+sources.files = $$SOURCES $$HEADERS $$RESOURCES *.pro *.jpg
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/itemviews/puzzle
+INSTALLS += target sources
+
+symbian: include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)
+
+wince* {
+   DEPLOYMENT_PLUGIN += qjpeg qgif qtiff
+}
+
diff --git a/examples/itemviews/puzzle/puzzle.qrc b/examples/itemviews/puzzle/puzzle.qrc
new file mode 100644
index 0000000000..4076cec026
--- /dev/null
+++ b/examples/itemviews/puzzle/puzzle.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/images">
+   <file>example.jpg</file>
+</qresource>
+</RCC>
diff --git a/examples/itemviews/puzzle/puzzlewidget.cpp b/examples/itemviews/puzzle/puzzlewidget.cpp
new file mode 100644
index 0000000000..a0d769d20a
--- /dev/null
+++ b/examples/itemviews/puzzle/puzzlewidget.cpp
@@ -0,0 +1,204 @@
+/****************************************************************************
+**
+** 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 "puzzlewidget.h"
+
+PuzzleWidget::PuzzleWidget(QWidget *parent)
+    : QWidget(parent)
+{
+    setAcceptDrops(true);
+    setMinimumSize(400, 400);
+    setMaximumSize(400, 400);
+}
+
+void PuzzleWidget::clear()
+{
+    pieceLocations.clear();
+    piecePixmaps.clear();
+    pieceRects.clear();
+    highlightedRect = QRect();
+    inPlace = 0;
+    update();
+}
+
+void PuzzleWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+    if (event->mimeData()->hasFormat("image/x-puzzle-piece"))
+        event->accept();
+    else
+        event->ignore();
+}
+
+void PuzzleWidget::dragLeaveEvent(QDragLeaveEvent *event)
+{
+    QRect updateRect = highlightedRect;
+    highlightedRect = QRect();
+    update(updateRect);
+    event->accept();
+}
+
+void PuzzleWidget::dragMoveEvent(QDragMoveEvent *event)
+{
+    QRect updateRect = highlightedRect.unite(targetSquare(event->pos()));
+
+    if (event->mimeData()->hasFormat("image/x-puzzle-piece")
+        && findPiece(targetSquare(event->pos())) == -1) {
+
+        highlightedRect = targetSquare(event->pos());
+        event->setDropAction(Qt::MoveAction);
+        event->accept();
+    } else {
+        highlightedRect = QRect();
+        event->ignore();
+    }
+
+    update(updateRect);
+}
+
+void PuzzleWidget::dropEvent(QDropEvent *event)
+{
+    if (event->mimeData()->hasFormat("image/x-puzzle-piece")
+        && findPiece(targetSquare(event->pos())) == -1) {
+
+        QByteArray pieceData = event->mimeData()->data("image/x-puzzle-piece");
+        QDataStream stream(&pieceData, QIODevice::ReadOnly);
+        QRect square = targetSquare(event->pos());
+        QPixmap pixmap;
+        QPoint location;
+        stream >> pixmap >> location;
+
+        pieceLocations.append(location);
+        piecePixmaps.append(pixmap);
+        pieceRects.append(square);
+
+        highlightedRect = QRect();
+        update(square);
+
+        event->setDropAction(Qt::MoveAction);
+        event->accept();
+
+        if (location == QPoint(square.x()/80, square.y()/80)) {
+            inPlace++;
+            if (inPlace == 25)
+                emit puzzleCompleted();
+        }
+    } else {
+        highlightedRect = QRect();
+        event->ignore();
+    }
+}
+
+int PuzzleWidget::findPiece(const QRect &pieceRect) const
+{
+    for (int i = 0; i < pieceRects.size(); ++i) {
+        if (pieceRect == pieceRects[i]) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+void PuzzleWidget::mousePressEvent(QMouseEvent *event)
+{
+    QRect square = targetSquare(event->pos());
+    int found = findPiece(square);
+
+    if (found == -1)
+        return;
+
+    QPoint location = pieceLocations[found];
+    QPixmap pixmap = piecePixmaps[found];
+    pieceLocations.removeAt(found);
+    piecePixmaps.removeAt(found);
+    pieceRects.removeAt(found);
+
+    if (location == QPoint(square.x()/80, square.y()/80))
+        inPlace--;
+
+    update(square);
+
+    QByteArray itemData;
+    QDataStream dataStream(&itemData, QIODevice::WriteOnly);
+
+    dataStream << pixmap << location;
+
+    QMimeData *mimeData = new QMimeData;
+    mimeData->setData("image/x-puzzle-piece", itemData);
+
+    QDrag *drag = new QDrag(this);
+    drag->setMimeData(mimeData);
+    drag->setHotSpot(event->pos() - square.topLeft());
+    drag->setPixmap(pixmap);
+
+    if (drag->start(Qt::MoveAction) == 0) {
+        pieceLocations.insert(found, location);
+        piecePixmaps.insert(found, pixmap);
+        pieceRects.insert(found, square);
+        update(targetSquare(event->pos()));
+
+        if (location == QPoint(square.x()/80, square.y()/80))
+            inPlace++;
+    }
+}
+
+void PuzzleWidget::paintEvent(QPaintEvent *event)
+{
+    QPainter painter;
+    painter.begin(this);
+    painter.fillRect(event->rect(), Qt::white);
+
+    if (highlightedRect.isValid()) {
+        painter.setBrush(QColor("#ffcccc"));
+        painter.setPen(Qt::NoPen);
+        painter.drawRect(highlightedRect.adjusted(0, 0, -1, -1));
+    }
+
+    for (int i = 0; i < pieceRects.size(); ++i) {
+        painter.drawPixmap(pieceRects[i], piecePixmaps[i]);
+    }
+    painter.end();
+}
+
+const QRect PuzzleWidget::targetSquare(const QPoint &position) const
+{
+    return QRect(position.x()/80 * 80, position.y()/80 * 80, 80, 80);
+}
diff --git a/examples/itemviews/puzzle/puzzlewidget.h b/examples/itemviews/puzzle/puzzlewidget.h
new file mode 100644
index 0000000000..e0356b48fd
--- /dev/null
+++ b/examples/itemviews/puzzle/puzzlewidget.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** 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 PUZZLEWIDGET_H
+#define PUZZLEWIDGET_H
+
+#include <QList>
+#include <QPoint>
+#include <QPixmap>
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QDragEnterEvent;
+class QDropEvent;
+class QMouseEvent;
+QT_END_NAMESPACE
+
+class PuzzleWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    PuzzleWidget(QWidget *parent = 0);
+    void clear();
+
+signals:
+    void puzzleCompleted();
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dragLeaveEvent(QDragLeaveEvent *event);
+    void dragMoveEvent(QDragMoveEvent *event);
+    void dropEvent(QDropEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+    void paintEvent(QPaintEvent *event);
+
+private:
+    int findPiece(const QRect &pieceRect) const;
+    const QRect targetSquare(const QPoint &position) const;
+
+    QList<QPixmap> piecePixmaps;
+    QList<QRect> pieceRects;
+    QList<QPoint> pieceLocations;
+    QRect highlightedRect;
+    int inPlace;
+};
+
+#endif