1 files changed, 168 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/itemviews/puzzle/piecesmodel.cpp b/tests/manual/examples/widgets/itemviews/puzzle/piecesmodel.cpp
new file mode 100644
index 0000000000..8e3ccf4aa3
--- /dev/null
+++ b/tests/manual/examples/widgets/itemviews/puzzle/piecesmodel.cpp
@@ -0,0 +1,168 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "piecesmodel.h"
+
+#include <QIcon>
+#include <QMimeData>
+#include <QRandomGenerator>
+
+PiecesModel::PiecesModel(int pieceSize, QObject *parent)
+    : QAbstractListModel(parent), m_PieceSize(pieceSize)
+{
+}
+
+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(m_PieceSize, m_PieceSize,
+                         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 (QRandomGenerator::global()->bounded(2) == 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 (QAbstractListModel::flags(index)|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, QDataStream::WriteOnly);
+
+    for (const 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, QDataStream::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
+{
+    return parent.isValid() ? 0 : pixmaps.size();
+}
+
+Qt::DropActions PiecesModel::supportedDropActions() const
+{
+    return Qt::CopyAction | Qt::MoveAction;
+}
+
+void PiecesModel::addPieces(const QPixmap &pixmap)
+{
+    if (!pixmaps.isEmpty()) {
+        beginRemoveRows(QModelIndex(), 0, pixmaps.size() - 1);
+        pixmaps.clear();
+        locations.clear();
+        endRemoveRows();
+    }
+    for (int y = 0; y < 5; ++y) {
+        for (int x = 0; x < 5; ++x) {
+            QPixmap pieceImage = pixmap.copy(x*m_PieceSize, y*m_PieceSize, m_PieceSize, m_PieceSize);
+            addPiece(pieceImage, QPoint(x, y));
+        }
+    }
+}