1 | /* |
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2 | * TSPSG: TSP Solver and Generator |
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3 | * Copyright (C) 2007-2009 Lёppa <contacts[at]oleksii[dot]name> |
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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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27 | : QAbstractTableModel(parent), nCities(0) |
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28 | { |
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29 | settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg"); |
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30 | } |
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31 | |
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32 | inline int CTSPModel::rand(int min, int max) const |
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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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37 | int CTSPModel::rowCount(const QModelIndex &) const |
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38 | { |
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39 | return nCities; |
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40 | } |
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41 | |
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42 | int CTSPModel::columnCount(const QModelIndex &) const |
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43 | { |
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44 | return nCities; |
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45 | } |
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46 | |
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47 | QVariant CTSPModel::headerData(int section, Qt::Orientation orientation, int role) const |
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48 | { |
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49 | if (role == Qt::DisplayRole) { |
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50 | if (orientation == Qt::Vertical) |
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51 | return trUtf8("City %1").arg(section + 1); |
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52 | else |
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53 | return trUtf8("%1").arg(section + 1); |
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54 | } |
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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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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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69 | if (index.row() < nCities && index.column() < nCities) |
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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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75 | else |
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76 | return QVariant(); |
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77 | } else if (role == Qt::UserRole) |
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78 | return table[index.row()][index.column()]; |
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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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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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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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106 | if (index.row() != index.column()) |
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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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111 | quint16 CTSPModel::numCities() const |
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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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118 | if (n == nCities) |
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119 | return; |
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120 | emit layoutAboutToBeChanged(); |
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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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124 | } |
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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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128 | nCities = n; |
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129 | emit layoutChanged(); |
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130 | } |
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131 | |
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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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141 | inline bool CTSPModel::loadError(QDataStream::Status status) |
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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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156 | bool CTSPModel::loadTask(QString fname) |
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157 | { |
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158 | QFile f(fname); |
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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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161 | return false; |
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162 | } |
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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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167 | if (loadError(ds.status())) |
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168 | return false; |
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169 | ds.device()->reset(); |
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170 | if (sig == TSPT) |
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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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175 | else if ((sig >> 16) == ZKT) |
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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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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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182 | f.close(); |
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183 | return false; |
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184 | } |
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185 | f.close(); |
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186 | return true; |
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187 | } |
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188 | |
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189 | bool CTSPModel::loadTSPT(QDataStream *ds) |
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190 | { |
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191 | // Skipping signature |
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192 | ds->skipRawData(sizeof(TSPT)); |
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193 | if (loadError(ds->status())) |
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194 | return false; |
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195 | // File version |
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196 | quint8 version; |
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197 | *ds >> version; |
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198 | if (loadError(ds->status())) |
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199 | return false; |
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200 | if (version > TSPT_VERSION) { |
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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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202 | return false; |
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203 | } |
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204 | // Skipping metadata |
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205 | ds->skipRawData(TSPT_META_SIZE); |
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206 | if (loadError(ds->status())) |
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207 | return false; |
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208 | // Cities number |
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209 | quint16 size; |
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210 | *ds >> size; |
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211 | if (loadError(ds->status())) |
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212 | return false; |
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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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215 | return false; |
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216 | } |
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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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222 | if (r != c) { |
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223 | *ds >> table[r][c]; |
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224 | if (loadError(ds->status())) { |
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225 | clear(); |
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226 | return false; |
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227 | } |
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228 | } |
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229 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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230 | return true; |
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231 | } |
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232 | |
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233 | bool CTSPModel::loadZKT(QDataStream *ds) |
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234 | { |
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235 | // Skipping signature |
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236 | ds->skipRawData(sizeof(ZKT)); |
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237 | if (loadError(ds->status())) |
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238 | return false; |
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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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242 | if (loadError(ds->status())) |
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243 | return false; |
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244 | if (version > ZKT_VERSION) { |
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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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246 | return false; |
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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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251 | if (loadError(ds->status())) |
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252 | return false; |
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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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255 | return false; |
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256 | } |
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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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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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264 | ds->readRawData(reinterpret_cast<char *>(&val),8); |
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265 | if (loadError(ds->status())) { |
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266 | clear(); |
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267 | return false; |
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268 | } |
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269 | table[r][c] = val; |
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270 | } else { |
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271 | ds->skipRawData(8); |
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272 | if (loadError(ds->status())) { |
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273 | clear(); |
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274 | return false; |
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275 | } |
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276 | } |
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277 | emit dataChanged(index(0,0),index(nCities - 1,nCities - 1)); |
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278 | return true; |
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279 | } |
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280 | |
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281 | bool CTSPModel::saveTask(QString fname) |
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282 | { |
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283 | QFile f(fname); |
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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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286 | return false; |
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287 | } |
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288 | QDataStream ds(&f); |
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289 | ds.setVersion(QDataStream::Qt_4_4); |
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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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293 | return false; |
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294 | } |
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295 | // File signature |
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296 | ds << TSPT; |
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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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300 | return false; |
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301 | } |
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302 | // File version |
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303 | ds << TSPT_VERSION; |
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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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307 | return false; |
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308 | } |
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309 | // File metadata version |
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310 | ds << TSPT_META_VERSION; |
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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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314 | return false; |
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315 | } |
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316 | // Metadata |
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317 | ds << OSID; |
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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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321 | return false; |
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322 | } |
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323 | // Number of cities |
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324 | ds << nCities; |
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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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328 | return false; |
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329 | } |
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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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333 | if (r != c) { |
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334 | ds << table[r][c]; |
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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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338 | return false; |
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339 | } |
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340 | } |
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341 | f.close(); |
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342 | return true; |
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343 | } |
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344 | |
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345 | void CTSPModel::randomize() |
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346 | { |
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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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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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