comparison: src/documentloader.cpp
src/documentloader.cpp
- changeset 1288
- d1e45f90654b
- parent 1287
- f1da43b7f5c6
- child 1289
- ec5a38d19cf5
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inserted
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| 1287:f1da43b7f5c6 | 1288:d1e45f90654b |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013 - 2017 Teemu Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #include "documentloader.h" | |
| 20 #include "lddocument.h" | |
| 21 #include "linetypes/modelobject.h" | |
| 22 #include "mainwindow.h" | |
| 23 #include "dialogs/openprogressdialog.h" | |
| 24 | |
| 25 DocumentLoader::DocumentLoader( | |
| 26 Model* model, | |
| 27 LDHeader& header, | |
| 28 bool onForeground, | |
| 29 QObject *parent, | |
| 30 ) : | |
| 31 QObject {parent}, | |
| 32 _model {model}, | |
| 33 _header {header}, | |
| 34 m_isOnForeground {onForeground} {} | |
| 35 | |
| 36 bool DocumentLoader::hasAborted() | |
| 37 { | |
| 38 return m_hasAborted; | |
| 39 } | |
| 40 | |
| 41 bool DocumentLoader::isDone() const | |
| 42 { | |
| 43 return m_isDone; | |
| 44 } | |
| 45 | |
| 46 int DocumentLoader::progress() const | |
| 47 { | |
| 48 return m_progress; | |
| 49 } | |
| 50 | |
| 51 int DocumentLoader::warningCount() const | |
| 52 { | |
| 53 return m_warningCount; | |
| 54 } | |
| 55 | |
| 56 bool DocumentLoader::isOnForeground() const | |
| 57 { | |
| 58 return m_isOnForeground; | |
| 59 } | |
| 60 | |
| 61 const QVector<LDObject*>& DocumentLoader::objects() const | |
| 62 { | |
| 63 return _model->objects(); | |
| 64 } | |
| 65 | |
| 66 void DocumentLoader::read (QIODevice* fp) | |
| 67 { | |
| 68 if (fp and fp->isOpen()) | |
| 69 { | |
| 70 while (not fp->atEnd()) | |
| 71 m_lines << QString::fromUtf8(fp->readLine()).simplified(); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 void DocumentLoader::start() | |
| 76 { | |
| 77 m_isDone = false; | |
| 78 m_progress = 0; | |
| 79 m_hasAborted = false; | |
| 80 | |
| 81 if (isOnForeground()) | |
| 82 { | |
| 83 // Show a progress dialog if we're loading the main lddocument.here so we can show progress updates and keep the | |
| 84 // WM posted that we're still here. | |
| 85 m_progressDialog = new OpenProgressDialog(qobject_cast<QWidget*>(parent())); | |
| 86 m_progressDialog->setNumLines (countof(m_lines)); | |
| 87 m_progressDialog->setModal (true); | |
| 88 m_progressDialog->show(); | |
| 89 connect (this, SIGNAL (workDone()), m_progressDialog, SLOT (accept())); | |
| 90 connect (m_progressDialog, SIGNAL (rejected()), this, SLOT (abort())); | |
| 91 } | |
| 92 else | |
| 93 { | |
| 94 m_progressDialog = nullptr; | |
| 95 } | |
| 96 | |
| 97 // Parse the header | |
| 98 while (m_progress < m_lines.size()) | |
| 99 { | |
| 100 const QString& line = m_lines[m_progress]; | |
| 101 | |
| 102 if (not line.isEmpty()) | |
| 103 { | |
| 104 if (line.startsWith("0")) | |
| 105 { | |
| 106 if (m_progress == 0) | |
| 107 { | |
| 108 _header.description = line.mid(1).simplified(); | |
| 109 } | |
| 110 else if (line.startsWith("0 !LDRAW_ORG")) | |
| 111 { | |
| 112 QStringList tokens = line.mid(strlen("0 !LDRAW_ORG")); | |
| 113 } | |
| 114 else if (line.startsWith("0 BFC")) | |
| 115 { | |
| 116 ...; | |
| 117 } | |
| 118 else | |
| 119 { | |
| 120 _model->addFromString(line); | |
| 121 } | |
| 122 m_progress += 1; | |
| 123 } | |
| 124 else | |
| 125 { | |
| 126 break; | |
| 127 } | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 // Begin working | |
| 132 work (0); | |
| 133 } | |
| 134 | |
| 135 void DocumentLoader::work (int i) | |
| 136 { | |
| 137 // User wishes to abort, so stop here now. | |
| 138 if (hasAborted()) | |
| 139 { | |
| 140 m_isDone = true; | |
| 141 return; | |
| 142 } | |
| 143 | |
| 144 // Parse up to 200 lines per iteration | |
| 145 int max = i + 200; | |
| 146 | |
| 147 bool invertNext = false; | |
| 148 | |
| 149 for (; i < max and i < (int) countof(m_lines); ++i) | |
| 150 { | |
| 151 const QString& line = m_lines[i]; | |
| 152 | |
| 153 if (line == "0 BFC INVERTNEXT") | |
| 154 { | |
| 155 invertNext = true; | |
| 156 continue; | |
| 157 } | |
| 158 | |
| 159 LDObject* obj = _model->addFromString(line); | |
| 160 | |
| 161 // Check for parse errors and warn about them | |
| 162 if (obj->type() == LDObjectType::Error) | |
| 163 { | |
| 164 emit parseErrorMessage(format(tr("Couldn't parse line #%1: %2"), progress() + 1, static_cast<LDError*> (obj)->reason())); | |
| 165 ++m_warningCount; | |
| 166 } | |
| 167 | |
| 168 if (invertNext and obj->type() == LDObjectType::SubfileReference) | |
| 169 obj->setInverted(true); | |
| 170 | |
| 171 invertNext = false; | |
| 172 } | |
| 173 | |
| 174 m_progress = i; | |
| 175 | |
| 176 if (m_progressDialog) | |
| 177 m_progressDialog->setProgress (i); | |
| 178 | |
| 179 if (i >= countof(m_lines) - 1) | |
| 180 { | |
| 181 emit workDone(); | |
| 182 m_isDone = true; | |
| 183 } | |
| 184 else | |
| 185 { | |
| 186 // If we have a dialog to show progress output to, we cannot just call work() again immediately as the dialog | |
| 187 // needs to be updated as well. Thus, we take a detour through the event loop by using the meta-object system. | |
| 188 // | |
| 189 // This terminates the loop here and control goes back to the function which called the file loader. It will | |
| 190 // keep processing the event loop until we're ready (see loadFileContents), thus the event loop will eventually | |
| 191 // catch the invokation we throw here and send us back. | |
| 192 if (isOnForeground()) | |
| 193 QMetaObject::invokeMethod (this, "work", Qt::QueuedConnection, Q_ARG (int, i)); | |
| 194 else | |
| 195 work (i); | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 void DocumentLoader::abort() | |
| 200 { | |
| 201 m_hasAborted = true; | |
| 202 } |
