src/libraries.cpp

Sun, 16 May 2021 22:41:00 +0300

author
Teemu Piippo <teemu@hecknology.net>
date
Sun, 16 May 2021 22:41:00 +0300
changeset 103
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parent 100
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child 112
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permissions
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update

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1 /*
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2 * LDForge: LDraw parts authoring CAD
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3 * Copyright (C) 2013 - 2020 Teemu Piippo
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4 *
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5 * This program is free software: you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation, either version 3 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18
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19 #include <QSettings>
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20 #include "libraries.h"
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21 #include "configuration.h"
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22
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23 /**
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24 * @brief Constructs a new library manager
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25 * @param parent Parent object
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26 */
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27 LibraryManager::LibraryManager(QObject* parent):
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28 QAbstractTableModel{parent}
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29 {
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30 }
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31
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32 /**
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33 * @brief Constructs a library manager from settings
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34 * @param settings Settings to construct from
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35 * @param parent Parent object
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36 */
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37 LibraryManager::LibraryManager(Configuration* settings, QObject* parent) :
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38 QAbstractTableModel{parent}
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39 {
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40 this->restoreFromSettings(settings);
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41 }
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42
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43 /**
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44 * @brief Yields a begin-terator for the libraries
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45 * @return iterator
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46 */
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47 QVector<Library>::const_iterator LibraryManager::begin() const
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48 {
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49 return this->libraries.begin();
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50 }
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51
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52 /**
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53 * @brief Yields an end-iterator for the libraries
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54 * @return iterator
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55 */
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56 QVector<Library>::const_iterator LibraryManager::end() const
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57 {
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58 return this->libraries.end();
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59 }
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60
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61 /**
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62 * @brief Searches the libraries for the specified file name.
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63 * @param fileName File to search for
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64 * @return Full path to the file, or empty string if not found.
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65 */
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66 QString LibraryManager::findFile(QString fileName) const
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67 {
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68 QString path;
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69 fileName.replace("\\", "/");
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70 bool found = false;
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71 for (const Library& library : this->libraries)
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72 {
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73 for (const QString& subdirectory : {"parts", "p"})
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74 {
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75 QDir directory = library.path;
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76 directory.cd(subdirectory);
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77 QFileInfo fileInfo = directory.absoluteFilePath(fileName);
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78 if (fileInfo.exists() && fileInfo.isFile())
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79 {
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80 path = fileInfo.absoluteFilePath();
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81 found = true;
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82 break;
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83 }
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84 }
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85 if (found)
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86 {
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87 break;
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88 }
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89 }
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90 return path;
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91 }
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92
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93 /**
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94 * @brief Adds a new library to the end of the libraries list.
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95 * @param library Library to add
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96 */
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97 void LibraryManager::addLibrary(const Library& library)
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98 {
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99 emit layoutAboutToBeChanged();
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100 libraries.append(library);
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101 emit layoutChanged();
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102 }
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103
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104 /**
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105 * @brief Removes a library by index. Does nothing if the index is not valid.
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106 * @param libraryIndex Index of the library
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107 */
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108 void LibraryManager::removeLibrary(const int libraryIndex)
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109 {
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110 Q_ASSERT(isValidIndex(libraryIndex));
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111 if (isValidIndex(libraryIndex))
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112 {
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113 emit layoutAboutToBeChanged();
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114 libraries.remove(libraryIndex);
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115 emit layoutChanged();
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116 }
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117 }
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118
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119 /**
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120 * @brief Gets a library by index.
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121 * @warning Index is assumed to be valid.
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122 * @param libraryIndex Index of the library
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123 * @return const reference
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124 */
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125 const Library& LibraryManager::library(int libraryIndex) const
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126 {
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127 Q_ASSERT(isValidIndex(libraryIndex));
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128 return this->libraries[libraryIndex];
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129 }
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130
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131 /**
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132 * @brief Changes the path of the specified library
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133 * @param libraryIndex Index of the library
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134 * @param path New path
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135 */
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136 void LibraryManager::setLibraryPath(int libraryIndex, const QDir& path)
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137 {
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138 if (this->isValidIndex(libraryIndex))
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139 {
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140 this->libraries[libraryIndex].path = path;
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141 this->signalLibraryChange(libraryIndex);
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142 }
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143 }
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144
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145 /**
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146 * @brief Changes the role of the specified library
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147 * @param libraryIndex Index of the library
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148 * @param role New role
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149 */
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150 void LibraryManager::setLibraryRole(int libraryIndex, const Library::Role role)
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151 {
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152 if (this->isValidIndex(libraryIndex))
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153 {
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154 this->libraries[libraryIndex].role = role;
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155 this->signalLibraryChange(libraryIndex);
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156 }
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157 }
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158
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159 /**
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160 * @brief Restores the libraries from the specified settings object. All unsaved
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161 * changes are lost.
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162 * @param settings Settings object to restore from.
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163 */
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164 void LibraryManager::restoreFromSettings(Configuration* settings)
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165 {
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166 this->libraries = settings->libraries();
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167 }
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168
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169 /**
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170 * @brief Saves the libraries to the specified settings object.
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171 * @param settings Settings object to modify.
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172 */
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173 void LibraryManager::storeToSettings(Configuration* settings)
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174 {
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175 settings->setLibraries(this->libraries);
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176 }
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177
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178 /**
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179 * @returns the amount of libraries
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180 */
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181 int LibraryManager::count() const
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182 {
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183 return this->libraries.size();
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184 }
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185
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186 void LibraryManager::moveLibrary(const int libraryFromIndex, const int libraryToIndex)
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187 {
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188 if (isValidIndex(libraryFromIndex) and
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189 (isValidIndex(libraryToIndex) or libraryToIndex == count()) and
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190 libraryFromIndex != libraryToIndex)
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191 {
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192 emit layoutAboutToBeChanged();
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193 const Library library = this->library(libraryFromIndex);
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194 if (libraryToIndex > libraryFromIndex)
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195 {
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196 this->libraries.insert(libraryToIndex, library);
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197 this->libraries.removeAt(libraryFromIndex);
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198 }
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199 else if (libraryToIndex < libraryFromIndex)
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200 {
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201 this->libraries.removeAt(libraryFromIndex);
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202 this->libraries.insert(libraryToIndex, library);
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203 }
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204 emit layoutChanged();
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205 }
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206 }
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207
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208 /**
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209 * @brief Checks whether the specified index points to a valid library.
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210 * @param libraryIndex Index to check
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211 * @returns whether or not it is valid
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212 */
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213 bool LibraryManager::isValidIndex(const int libraryIndex) const
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214 {
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215 return libraryIndex >= 0 && libraryIndex < this->libraries.size();
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216 }
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217
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218 /**
26
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219 * @brief Iterates over libraries and loads LDConfig.ldr from each of them.
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220 * @param errors Where to stream any encountered errors
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221 * @return color table
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222 */
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223 ldraw::ColorTable LibraryManager::loadColorTable(QTextStream& errors)
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224 {
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225 ldraw::ColorTable result;
26
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226 for (const Library& library : this->libraries)
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227 {
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228 const QString path = library.path.filePath("LDConfig.ldr");
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229 QFile file{path};
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230 if (file.open(QIODevice::ReadOnly | QIODevice::Text))
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231 {
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232 (void) result.load(file, errors);
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233 }
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234 }
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235 return result;
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236 }
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237
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238 /**
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239 * @brief Gets a human-readable string for the specified role
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240 * @param role Role to get a string for
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241 * @returns string
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242 */
7
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243 QString Library::libraryRoleName(const Role role)
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244 {
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245 switch (role)
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246 {
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247 case Library::OfficialLibrary:
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248 return LibraryManager::tr("Official library");
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249 case Library::UnofficialLibrary:
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250 return LibraryManager::tr("Unofficial library");
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251 case Library::WorkingLibrary:
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252 return LibraryManager::tr("Working library");
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253 }
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254 return "???";
7
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255 }
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256
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257 /**
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258 * @brief Overload necessary to implement QAbstractTableModel
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259 * @param index
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260 * @return Item flags
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261 */
7
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262 Qt::ItemFlags LibraryManager::flags(const QModelIndex& index) const
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263 {
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264 Q_UNUSED(index);
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265 return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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266 }
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267
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268 /**
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269 * @brief Returns data needed to represent the libraries in a table. This function
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270 * decides how data is represented in a table view.
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271 * @param index Index to get data for
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272 * @param role Role of the data (role as in Qt model-view role, not LDraw library role)
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273 * @returns variant
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274 */
7
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275 QVariant LibraryManager::data(const QModelIndex& index, int role) const
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276 {
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277 if (role != Qt::DisplayRole)
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278 {
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279 return {};
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280 }
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281 else
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282 {
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283 const int row = index.row();
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284 const Column column = static_cast<Column>(index.column());
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285 const Library& library = this->library(row);
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286 switch (column)
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287 {
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288 case RoleColumn:
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289 return Library::libraryRoleName(library.role);
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290 case PathColumn:
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291 return library.path.absolutePath();
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292 }
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293 return {};
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294 }
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295 }
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296
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297 /**
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298 * @brief Returns header texts for a table view. We only implement column headers here.
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299 * @param section Index of the column (can also be a row but we only have column headers)
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300 * @param orientation Orientation (we only support horizontal orientation)
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301 * @param role Role of the data (role as in Qt model-view role, not LDraw library role)
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302 * @returns variant
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303 */
7
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304 QVariant LibraryManager::headerData(int section, Qt::Orientation orientation, int role) const
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305 {
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306 if (orientation == Qt::Horizontal and role == Qt::DisplayRole)
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307 {
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308 switch(static_cast<Column>(section))
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309 {
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310 case PathColumn:
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311 return tr("Path");
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312 case RoleColumn:
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313 return tr("Role");
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314 }
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315 return {};
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316 }
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317 else
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318 {
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319 return {};
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320 }
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321 }
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322
8
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323 /**
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324 * @brief Overload necessary to implement QAbstractTableModel.
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325 * @returns how many rows there are in the table. Since there is one row per library, this returns
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326 * the amount of libraries.
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327 */
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328 int LibraryManager::rowCount(const QModelIndex&) const
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329 {
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330 return this->count();
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331 }
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332
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333 /**
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334 * @brief LibraryManager::columnCount
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335 * @returns how many columns there are in the table.
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336 */
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337 int LibraryManager::columnCount(const QModelIndex&) const
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338 {
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339 return 2;
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340 }
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341
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342 /**
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343 * @brief Signals view objects that the specified library has changed. This is necessary
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344 * to update the table widget know when libraries are changed.
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345 * @param libraryIndex Index of the library.
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346 */
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347 void LibraryManager::signalLibraryChange(int libraryIndex)
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348 {
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349 Q_ASSERT(isValidIndex(libraryIndex));
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350 const QModelIndex topLeft = this->index(libraryIndex, 0);
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351 const QModelIndex bottomRight = this->index(libraryIndex, columnCount({}) - 1);
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352 emit dataChanged(topLeft, bottomRight);
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353 }
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354
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355 /**
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356 * @brief Overload for operator<< to allow serializing a library into the configuration file.
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357 * @param stream Stream to write the library into
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358 * @param library Library to write into the stream
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359 * @returns the stream
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360 */
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361 QDataStream& operator<<(QDataStream& stream, const Library& library)
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362 {
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363 const QString path = library.path.absolutePath();
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364 const int role = static_cast<int>(library.role);
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365 return stream << path << role;
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366 }
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367
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368 /**
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369 * @brief Overload for operator>> to allow serializing a library into the configuration file.
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370 * @param stream Stream to read the library from
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371 * @param library Library to obtain from the stream
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372 * @returns the stream
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373 */
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374 QDataStream& operator>>(QDataStream& stream, Library& library)
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375 {
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376 QString path;
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377 int role;
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378 QDataStream& result = stream >> path >> role;
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379 library.path.setPath(path);
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380 library.role = static_cast<Library::Role>(role);
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381 return result;
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382 }
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383
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384 bool operator==(const Library& one, const Library& other)
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385 {
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386 return one.role == other.role and one.path == other.path;
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387 }

mercurial