2011-04-27 10:05:43 +00:00
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/****************************************************************************
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**
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2016-01-22 12:24:00 +00:00
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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2011-04-27 10:05:43 +00:00
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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2016-01-22 12:24:00 +00:00
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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2011-04-27 10:05:43 +00:00
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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2015-02-13 11:15:33 +00:00
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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2012-09-19 12:28:29 +00:00
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**
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2011-04-27 10:05:43 +00:00
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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2012-01-24 06:17:24 +00:00
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**
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2011-04-27 10:05:43 +00:00
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "piecesmodel.h"
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2012-11-22 12:40:51 +00:00
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#include <QIcon>
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#include <QMimeData>
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2017-04-14 04:13:52 +00:00
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#include <QRandomGenerator>
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2012-11-22 12:40:51 +00:00
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2011-04-27 17:16:41 +00:00
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PiecesModel::PiecesModel(int pieceSize, QObject *parent)
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: QAbstractListModel(parent), m_PieceSize(pieceSize)
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2011-04-27 10:05:43 +00:00
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{
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}
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QVariant PiecesModel::data(const QModelIndex &index, int role) const
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{
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if (!index.isValid())
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return QVariant();
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if (role == Qt::DecorationRole)
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2011-04-27 17:16:41 +00:00
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return QIcon(pixmaps.value(index.row()).scaled(m_PieceSize, m_PieceSize,
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2011-04-27 10:05:43 +00:00
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Qt::KeepAspectRatio, Qt::SmoothTransformation));
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else if (role == Qt::UserRole)
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return pixmaps.value(index.row());
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else if (role == Qt::UserRole + 1)
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return locations.value(index.row());
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return QVariant();
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}
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void PiecesModel::addPiece(const QPixmap &pixmap, const QPoint &location)
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{
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int row;
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2017-04-14 04:13:52 +00:00
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if (QRandomGenerator::global()->bounded(2) == 1)
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2011-04-27 10:05:43 +00:00
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row = 0;
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else
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row = pixmaps.size();
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beginInsertRows(QModelIndex(), row, row);
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pixmaps.insert(row, pixmap);
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locations.insert(row, location);
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endInsertRows();
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}
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Qt::ItemFlags PiecesModel::flags(const QModelIndex &index) const
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{
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if (index.isValid())
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2012-11-26 13:27:37 +00:00
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return (QAbstractListModel::flags(index)|Qt::ItemIsDragEnabled);
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2011-04-27 10:05:43 +00:00
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return Qt::ItemIsDropEnabled;
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}
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bool PiecesModel::removeRows(int row, int count, const QModelIndex &parent)
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{
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if (parent.isValid())
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return false;
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if (row >= pixmaps.size() || row + count <= 0)
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return false;
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int beginRow = qMax(0, row);
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int endRow = qMin(row + count - 1, pixmaps.size() - 1);
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beginRemoveRows(parent, beginRow, endRow);
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while (beginRow <= endRow) {
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pixmaps.removeAt(beginRow);
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locations.removeAt(beginRow);
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++beginRow;
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}
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endRemoveRows();
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return true;
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}
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QStringList PiecesModel::mimeTypes() const
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{
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QStringList types;
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types << "image/x-puzzle-piece";
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return types;
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}
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QMimeData *PiecesModel::mimeData(const QModelIndexList &indexes) const
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{
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QMimeData *mimeData = new QMimeData();
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QByteArray encodedData;
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2020-08-07 09:46:07 +00:00
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QDataStream stream(&encodedData, QDataStream::WriteOnly);
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2011-04-27 10:05:43 +00:00
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2018-11-24 16:29:15 +00:00
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for (const QModelIndex &index : indexes) {
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2011-04-27 10:05:43 +00:00
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if (index.isValid()) {
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QPixmap pixmap = qvariant_cast<QPixmap>(data(index, Qt::UserRole));
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QPoint location = data(index, Qt::UserRole+1).toPoint();
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stream << pixmap << location;
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}
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}
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mimeData->setData("image/x-puzzle-piece", encodedData);
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return mimeData;
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}
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bool PiecesModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
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int row, int column, const QModelIndex &parent)
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{
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if (!data->hasFormat("image/x-puzzle-piece"))
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return false;
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if (action == Qt::IgnoreAction)
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return true;
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if (column > 0)
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return false;
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int endRow;
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if (!parent.isValid()) {
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if (row < 0)
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endRow = pixmaps.size();
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else
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endRow = qMin(row, pixmaps.size());
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2012-11-22 12:40:51 +00:00
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} else {
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2011-04-27 10:05:43 +00:00
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endRow = parent.row();
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2012-11-22 12:40:51 +00:00
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}
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2011-04-27 10:05:43 +00:00
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QByteArray encodedData = data->data("image/x-puzzle-piece");
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2020-08-07 09:46:07 +00:00
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QDataStream stream(&encodedData, QDataStream::ReadOnly);
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2011-04-27 10:05:43 +00:00
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while (!stream.atEnd()) {
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QPixmap pixmap;
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QPoint location;
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stream >> pixmap >> location;
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beginInsertRows(QModelIndex(), endRow, endRow);
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pixmaps.insert(endRow, pixmap);
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locations.insert(endRow, location);
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endInsertRows();
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++endRow;
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}
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return true;
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}
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int PiecesModel::rowCount(const QModelIndex &parent) const
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{
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2018-11-24 16:29:15 +00:00
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return parent.isValid() ? 0 : pixmaps.size();
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2011-04-27 10:05:43 +00:00
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}
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Qt::DropActions PiecesModel::supportedDropActions() const
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{
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return Qt::CopyAction | Qt::MoveAction;
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}
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2018-11-24 16:29:15 +00:00
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void PiecesModel::addPieces(const QPixmap &pixmap)
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2011-04-27 10:05:43 +00:00
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{
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2017-12-31 11:38:33 +00:00
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if (!pixmaps.isEmpty()) {
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beginRemoveRows(QModelIndex(), 0, pixmaps.size() - 1);
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pixmaps.clear();
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locations.clear();
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endRemoveRows();
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}
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2011-04-27 10:05:43 +00:00
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for (int y = 0; y < 5; ++y) {
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for (int x = 0; x < 5; ++x) {
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2011-04-27 17:16:41 +00:00
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QPixmap pieceImage = pixmap.copy(x*m_PieceSize, y*m_PieceSize, m_PieceSize, m_PieceSize);
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2011-04-27 10:05:43 +00:00
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addPiece(pieceImage, QPoint(x, y));
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}
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}
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}
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