[14] | 1 | /* |
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[42] | 2 | * TSPSG: TSP Solver and Generator |
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[17] | 3 | * Copyright (C) 2007-2009 Lёppa <contacts[at]oleksii[dot]name> |
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[14] | 4 | * |
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| 5 | * $Id: tspmodel.cpp 47 2009-08-02 19:47:45Z laleppa $ |
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| 6 | * $URL: https://tspsg.svn.sourceforge.net/svnroot/tspsg/trunk/src/tspmodel.cpp $ |
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| 7 | * |
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| 8 | * This file is part of TSPSG. |
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| 9 | * |
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| 10 | * TSPSG is free software: you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation, either version 3 of the License, or |
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| 13 | * (at your option) any later version. |
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| 14 | * |
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| 15 | * TSPSG is distributed in the hope that it will be useful, |
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | * GNU General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU General Public License |
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| 21 | * along with TSPSG. If not, see <http://www.gnu.org/licenses/>. |
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| 22 | */ |
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| 23 | |
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| 24 | #include "tspmodel.h" |
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| 25 | |
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| 26 | CTSPModel::CTSPModel(QObject *parent) |
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[21] | 27 | : QAbstractTableModel(parent), nCities(0) |
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[14] | 28 | { |
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[23] | 29 | settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg"); |
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[14] | 30 | } |
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| 31 | |
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[35] | 32 | inline int CTSPModel::rand(int min, int max) const |
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[14] | 33 | { |
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| 34 | return min + (int)(((float)qrand() / RAND_MAX) * max); |
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| 35 | } |
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| 36 | |
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[36] | 37 | int CTSPModel::rowCount(const QModelIndex &) const |
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[14] | 38 | { |
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| 39 | return nCities; |
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| 40 | } |
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| 41 | |
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[36] | 42 | int CTSPModel::columnCount(const QModelIndex &) const |
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[14] | 43 | { |
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| 44 | return nCities; |
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| 45 | } |
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| 46 | |
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[17] | 47 | QVariant CTSPModel::headerData(int section, Qt::Orientation orientation, int role) const |
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[14] | 48 | { |
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[34] | 49 | if (role == Qt::DisplayRole) { |
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[17] | 50 | if (orientation == Qt::Vertical) |
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[27] | 51 | return trUtf8("City %1").arg(section + 1); |
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[17] | 52 | else |
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| 53 | return trUtf8("%1").arg(section + 1); |
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[34] | 54 | } |
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[14] | 55 | return QVariant(); |
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| 56 | } |
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| 57 | |
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| 58 | QVariant CTSPModel::data(const QModelIndex &index, int role) const |
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| 59 | { |
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| 60 | if (!index.isValid()) |
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| 61 | return QVariant(); |
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| 62 | if (role == Qt::TextAlignmentRole) |
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| 63 | return int(Qt::AlignCenter); |
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[15] | 64 | else if (role == Qt::FontRole) { |
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| 65 | QFont font; |
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| 66 | font.setBold(true); |
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| 67 | return font; |
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| 68 | } else if (role == Qt::DisplayRole || role == Qt::EditRole) { |
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[14] | 69 | if (index.row() < nCities && index.column() < nCities) |
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[15] | 70 | if (table[index.row()][index.column()] == INFINITY) |
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| 71 | return trUtf8(INFSTR); |
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| 72 | else |
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| 73 | // HACK: Converting to string to prevent spinbox in edit mode |
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| 74 | return QVariant(table[index.row()][index.column()]).toString(); |
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[14] | 75 | else |
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| 76 | return QVariant(); |
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[15] | 77 | } else if (role == Qt::UserRole) |
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| 78 | return table[index.row()][index.column()]; |
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[14] | 79 | return QVariant(); |
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| 80 | } |
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| 81 | |
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| 82 | bool CTSPModel::setData(const QModelIndex &index, const QVariant &value, int role) |
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| 83 | { |
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[15] | 84 | if (!index.isValid()) |
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| 85 | return false; |
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| 86 | if (role == Qt::EditRole && index.row() != index.column()) { |
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| 87 | if (value.toString().compare(INFSTR) == 0) |
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| 88 | table[index.row()][index.column()] = INFINITY; |
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| 89 | else { |
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| 90 | bool ok; |
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| 91 | double tmp = value.toDouble(&ok); |
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| 92 | if (!ok || tmp < 0) |
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| 93 | return false; |
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| 94 | else |
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| 95 | table[index.row()][index.column()] = tmp; |
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| 96 | } |
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| 97 | emit dataChanged(index,index); |
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| 98 | return true; |
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| 99 | } |
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| 100 | return false; |
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[14] | 101 | } |
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| 102 | |
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| 103 | Qt::ItemFlags CTSPModel::flags(const QModelIndex &index) const |
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| 104 | { |
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| 105 | Qt::ItemFlags flags = QAbstractItemModel::flags(index); |
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[15] | 106 | if (index.row() != index.column()) |
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[14] | 107 | flags |= Qt::ItemIsEditable; |
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| 108 | return flags; |
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| 109 | } |
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| 110 | |
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[31] | 111 | quint16 CTSPModel::numCities() const |
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[14] | 112 | { |
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| 113 | return nCities; |
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| 114 | } |
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| 115 | |
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| 116 | void CTSPModel::setNumCities(int n) |
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| 117 | { |
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[15] | 118 | if (n == nCities) |
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| 119 | return; |
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| 120 | emit layoutAboutToBeChanged(); |
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[42] | 121 | table.resize(n); |
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| 122 | for (int k = 0; k < n; k++) { |
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| 123 | table[k].resize(n); |
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[14] | 124 | } |
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[42] | 125 | if (n > nCities) |
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| 126 | for (int k = nCities; k < n; k++) |
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| 127 | table[k][k] = INFINITY; |
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[14] | 128 | nCities = n; |
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[15] | 129 | emit layoutChanged(); |
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[14] | 130 | } |
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| 131 | |
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[29] | 132 | void CTSPModel::clear() |
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| 133 | { |
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| 134 | for (int r = 0; r < nCities; r++) |
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| 135 | for (int c = 0; c < nCities; c++) |
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| 136 | if (r != c) |
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| 137 | table[r][c] = 0; |
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| 138 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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| 139 | } |
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| 140 | |
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[42] | 141 | inline bool CTSPModel::loadError(QDataStream::Status status) |
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[35] | 142 | { |
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| 143 | QString err; |
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| 144 | if (status == QDataStream::Ok) |
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| 145 | return false; |
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| 146 | else if (status == QDataStream::ReadPastEnd) |
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| 147 | err = trUtf8("Unexpected end of file."); |
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| 148 | else if (status == QDataStream::ReadCorruptData) |
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| 149 | err = trUtf8("Corrupt data read. File possibly corrupted."); |
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| 150 | else |
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| 151 | err = trUtf8("Unknown error."); |
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| 152 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + err,QMessageBox::Ok).exec(); |
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| 153 | return true; |
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| 154 | } |
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| 155 | |
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[47] | 156 | bool CTSPModel::loadTask(QString fname) |
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[31] | 157 | { |
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| 158 | QFile f(fname); |
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[35] | 159 | if (!f.open(QIODevice::ReadOnly)) { |
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| 160 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),QString(trUtf8("Unable to open task file.\nError: %1")).arg(f.errorString()),QMessageBox::Ok).exec(); |
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[47] | 161 | return false; |
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[35] | 162 | } |
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[31] | 163 | QDataStream ds(&f); |
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| 164 | ds.setVersion(QDataStream::Qt_4_4); |
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| 165 | quint32 sig; |
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| 166 | ds >> sig; |
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[35] | 167 | if (loadError(ds.status())) |
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[47] | 168 | return false; |
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[31] | 169 | ds.device()->reset(); |
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| 170 | if (sig == TSPT) |
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[47] | 171 | if (!loadTSPT(&ds)) { |
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| 172 | f.close(); |
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| 173 | return false; |
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| 174 | } |
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[31] | 175 | else if ((sig >> 16) == ZKT) |
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[47] | 176 | if (!loadZKT(&ds)) { |
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| 177 | f.close(); |
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| 178 | return false; |
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| 179 | } |
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| 180 | else { |
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[35] | 181 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unknown file format or file is corrupted."),QMessageBox::Ok).exec(); |
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[47] | 182 | f.close(); |
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| 183 | return false; |
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| 184 | } |
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[31] | 185 | f.close(); |
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[47] | 186 | return true; |
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[31] | 187 | } |
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| 188 | |
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[47] | 189 | bool CTSPModel::loadTSPT(QDataStream *ds) |
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[31] | 190 | { |
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| 191 | // Skipping signature |
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| 192 | ds->skipRawData(sizeof(TSPT)); |
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[35] | 193 | if (loadError(ds->status())) |
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[47] | 194 | return false; |
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[31] | 195 | // File version |
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| 196 | quint8 version; |
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| 197 | *ds >> version; |
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[35] | 198 | if (loadError(ds->status())) |
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[47] | 199 | return false; |
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[31] | 200 | if (version > TSPT_VERSION) { |
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[35] | 201 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("File version is newer than application supports.\nPlease, try to update application."),QMessageBox::Ok).exec(); |
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[47] | 202 | return false; |
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[31] | 203 | } |
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| 204 | // Skipping metadata |
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| 205 | ds->skipRawData(TSPT_META_SIZE); |
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[35] | 206 | if (loadError(ds->status())) |
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[47] | 207 | return false; |
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[31] | 208 | // Cities number |
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| 209 | quint16 size; |
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| 210 | *ds >> size; |
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[35] | 211 | if (loadError(ds->status())) |
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[47] | 212 | return false; |
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[35] | 213 | if (size < 3) { |
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| 214 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unexpected data read.\nFile is possibly corrupted."),QMessageBox::Ok).exec(); |
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[47] | 215 | return false; |
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[35] | 216 | } |
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[31] | 217 | if (nCities != size) |
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| 218 | emit numCitiesChanged(size); |
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| 219 | // Costs |
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| 220 | for (int r = 0; r < size; r++) |
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| 221 | for (int c = 0; c < size; c++) |
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[35] | 222 | if (r != c) { |
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[31] | 223 | *ds >> table[r][c]; |
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[35] | 224 | if (loadError(ds->status())) { |
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| 225 | clear(); |
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[47] | 226 | return false; |
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[35] | 227 | } |
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| 228 | } |
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[31] | 229 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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[47] | 230 | return true; |
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[31] | 231 | } |
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| 232 | |
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[47] | 233 | bool CTSPModel::loadZKT(QDataStream *ds) |
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[31] | 234 | { |
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| 235 | // Skipping signature |
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| 236 | ds->skipRawData(sizeof(ZKT)); |
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[35] | 237 | if (loadError(ds->status())) |
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[47] | 238 | return false; |
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[31] | 239 | // File version |
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| 240 | quint16 version; |
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| 241 | ds->readRawData(reinterpret_cast<char *>(&version),2); |
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[35] | 242 | if (loadError(ds->status())) |
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[47] | 243 | return false; |
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[31] | 244 | if (version > ZKT_VERSION) { |
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[35] | 245 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("File version is newer than application supports.\nPlease, try to update application."),QMessageBox::Ok).exec(); |
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[47] | 246 | return false; |
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[31] | 247 | } |
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| 248 | // Cities number |
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| 249 | quint8 size; |
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| 250 | ds->readRawData(reinterpret_cast<char *>(&size),1); |
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[35] | 251 | if (loadError(ds->status())) |
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[47] | 252 | return false; |
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[35] | 253 | if ((size < 3) || (size > 5)) { |
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| 254 | QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unexpected data read.\nFile is possibly corrupted."),QMessageBox::Ok).exec(); |
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[47] | 255 | return false; |
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[35] | 256 | } |
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[31] | 257 | if (nCities != size) |
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| 258 | emit numCitiesChanged(size); |
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| 259 | // Costs |
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| 260 | double val; |
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[42] | 261 | for (int r = 0; r < 5; r++) |
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| 262 | for (int c = 0; c < 5; c++) |
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| 263 | if ((r != c) && (r < size)) { |
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[31] | 264 | ds->readRawData(reinterpret_cast<char *>(&val),8); |
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[35] | 265 | if (loadError(ds->status())) { |
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| 266 | clear(); |
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[47] | 267 | return false; |
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[35] | 268 | } |
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[31] | 269 | table[r][c] = val; |
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[35] | 270 | } else { |
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[31] | 271 | ds->skipRawData(8); |
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[35] | 272 | if (loadError(ds->status())) { |
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| 273 | clear(); |
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[47] | 274 | return false; |
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[35] | 275 | } |
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| 276 | } |
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[31] | 277 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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[47] | 278 | return true; |
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[31] | 279 | } |
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| 280 | |
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[37] | 281 | bool CTSPModel::saveTask(QString fname) |
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[31] | 282 | { |
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| 283 | QFile f(fname); |
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[35] | 284 | if (!f.open(QIODevice::WriteOnly)) { |
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| 285 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),QString(trUtf8("Unable to create task file.\nError: %1\nMaybe, file is read-only?")).arg(f.errorString()),QMessageBox::Ok).exec(); |
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[37] | 286 | return false; |
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[35] | 287 | } |
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[31] | 288 | QDataStream ds(&f); |
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| 289 | ds.setVersion(QDataStream::Qt_4_4); |
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[35] | 290 | if (f.error() != QFile::NoError) { |
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| 291 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 292 | f.close(); |
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[37] | 293 | return false; |
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[35] | 294 | } |
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[31] | 295 | // File signature |
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| 296 | ds << TSPT; |
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[35] | 297 | if (f.error() != QFile::NoError) { |
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| 298 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 299 | f.close(); |
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[37] | 300 | return false; |
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[35] | 301 | } |
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[31] | 302 | // File version |
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| 303 | ds << TSPT_VERSION; |
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[35] | 304 | if (f.error() != QFile::NoError) { |
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| 305 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 306 | f.close(); |
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[37] | 307 | return false; |
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[35] | 308 | } |
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[31] | 309 | // File metadata version |
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| 310 | ds << TSPT_META_VERSION; |
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[35] | 311 | if (f.error() != QFile::NoError) { |
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| 312 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 313 | f.close(); |
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[37] | 314 | return false; |
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[35] | 315 | } |
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[31] | 316 | // Metadata |
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| 317 | ds << OSID; |
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[35] | 318 | if (f.error() != QFile::NoError) { |
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| 319 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 320 | f.close(); |
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[37] | 321 | return false; |
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[35] | 322 | } |
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[31] | 323 | // Number of cities |
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| 324 | ds << nCities; |
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[35] | 325 | if (f.error() != QFile::NoError) { |
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| 326 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 327 | f.close(); |
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[37] | 328 | return false; |
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[35] | 329 | } |
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[31] | 330 | // Costs |
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| 331 | for (int r = 0; r < nCities; r++) |
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| 332 | for (int c = 0; c < nCities; c++) |
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[35] | 333 | if (r != c) { |
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[31] | 334 | ds << table[r][c]; |
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[35] | 335 | if (f.error() != QFile::NoError) { |
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| 336 | QMessageBox(QMessageBox::Critical,trUtf8("Task Save"),trUtf8("Unable to save task.\nError: %1").arg(f.errorString()),QMessageBox::Ok).exec(); |
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| 337 | f.close(); |
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[37] | 338 | return false; |
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[35] | 339 | } |
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| 340 | } |
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[31] | 341 | f.close(); |
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[37] | 342 | return true; |
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[31] | 343 | } |
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| 344 | |
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[15] | 345 | void CTSPModel::randomize() |
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| 346 | { |
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[21] | 347 | int randMin = settings->value("MinCost",DEF_RAND_MIN).toInt(); |
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| 348 | int randMax = settings->value("MaxCost",DEF_RAND_MAX).toInt(); |
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[15] | 349 | for (int r = 0; r < nCities; r++) |
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| 350 | for (int c = 0; c < nCities; c++) |
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| 351 | if (r != c) |
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| 352 | table[r][c] = rand(randMin,randMax); |
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| 353 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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| 354 | } |
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