/**************************************************************************** ** ** Copyright (C) 2010 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 #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 = qVariantValue(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)); } } }