comparison: src/documentloader.cpp
src/documentloader.cpp
- changeset 980
- 4a95c6b06ebe
- child 984
- a7b6f987d269
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| 979:880d3fe9ac7c | 980:4a95c6b06ebe |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013 - 2015 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 <QFile> | |
| 20 #include "documentloader.h" | |
| 21 #include "ldDocument.h" | |
| 22 #include "ldObject.h" | |
| 23 #include "mainwindow.h" | |
| 24 #include "dialogs/openprogressdialog.h" | |
| 25 | |
| 26 DocumentLoader::DocumentLoader (bool onForeground, QObject *parent) : | |
| 27 QObject (parent), | |
| 28 m_warningCount (0), | |
| 29 m_isDone (false), | |
| 30 m_hasAborted (false), | |
| 31 m_isOnForeground (onForeground) {} | |
| 32 | |
| 33 bool DocumentLoader::hasAborted() | |
| 34 { | |
| 35 return m_hasAborted; | |
| 36 } | |
| 37 | |
| 38 bool DocumentLoader::isDone() const | |
| 39 { | |
| 40 return m_isDone; | |
| 41 } | |
| 42 | |
| 43 int DocumentLoader::progress() const | |
| 44 { | |
| 45 return m_progress; | |
| 46 } | |
| 47 | |
| 48 int DocumentLoader::warningCount() const | |
| 49 { | |
| 50 return m_warningCount; | |
| 51 } | |
| 52 | |
| 53 bool DocumentLoader::isOnForeground() const | |
| 54 { | |
| 55 return m_isOnForeground; | |
| 56 } | |
| 57 | |
| 58 const LDObjectList& DocumentLoader::objects() const | |
| 59 { | |
| 60 return m_objects; | |
| 61 } | |
| 62 | |
| 63 void DocumentLoader::read (QIODevice* fp) | |
| 64 { | |
| 65 if (fp and fp->isOpen()) | |
| 66 { | |
| 67 while (not fp->atEnd()) | |
| 68 m_lines << QString::fromUtf8 (fp->readLine()); | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 void DocumentLoader::start() | |
| 73 { | |
| 74 m_isDone = false; | |
| 75 m_progress = 0; | |
| 76 m_hasAborted = false; | |
| 77 | |
| 78 if (isOnForeground()) | |
| 79 { | |
| 80 // Show a progress dialog if we're loading the main ldDocument.here so we can show progress updates and keep the | |
| 81 // WM posted that we're still here. | |
| 82 m_progressDialog = new OpenProgressDialog (g_win); | |
| 83 m_progressDialog->setNumLines (m_lines.size()); | |
| 84 m_progressDialog->setModal (true); | |
| 85 m_progressDialog->show(); | |
| 86 connect (this, SIGNAL (workDone()), m_progressDialog, SLOT (accept())); | |
| 87 connect (m_progressDialog, SIGNAL (rejected()), this, SLOT (abort())); | |
| 88 } | |
| 89 else | |
| 90 m_progressDialog = null; | |
| 91 | |
| 92 // Begin working | |
| 93 work (0); | |
| 94 } | |
| 95 | |
| 96 void DocumentLoader::work (int i) | |
| 97 { | |
| 98 // User wishes to abort, so stop here now. | |
| 99 if (hasAborted()) | |
| 100 { | |
| 101 for (LDObject* obj : m_objects) | |
| 102 obj->destroy(); | |
| 103 | |
| 104 m_objects.clear(); | |
| 105 m_isDone = true; | |
| 106 return; | |
| 107 } | |
| 108 | |
| 109 // Parse up to 200 lines per iteration | |
| 110 int max = i + 200; | |
| 111 | |
| 112 for (; i < max and i < (int) m_lines.size(); ++i) | |
| 113 { | |
| 114 QString line = m_lines[i]; | |
| 115 | |
| 116 // Trim the trailing newline | |
| 117 while (line.endsWith ("\n") or line.endsWith ("\r")) | |
| 118 line.chop (1); | |
| 119 | |
| 120 LDObject* obj = ParseLine (line); | |
| 121 | |
| 122 // Check for parse errors and warn about them | |
| 123 if (obj->type() == OBJ_Error) | |
| 124 { | |
| 125 print ("Couldn't parse line #%1: %2", progress() + 1, static_cast<LDError*> (obj)->reason()); | |
| 126 ++m_warningCount; | |
| 127 } | |
| 128 | |
| 129 m_objects << obj; | |
| 130 } | |
| 131 | |
| 132 m_progress = i; | |
| 133 | |
| 134 if (m_progressDialog) | |
| 135 m_progressDialog->setProgress (i); | |
| 136 | |
| 137 if (i >= m_lines.size() - 1) | |
| 138 { | |
| 139 emit workDone(); | |
| 140 m_isDone = true; | |
| 141 } | |
| 142 else | |
| 143 { | |
| 144 // If we have a dialog to show progress output to, we cannot just call work() again immediately as the dialog | |
| 145 // needs to be updated as well. Thus, we take a detour through the event loop by using the meta-object system. | |
| 146 // | |
| 147 // This terminates the loop here and control goes back to the function which called the file loader. It will | |
| 148 // keep processing the event loop until we're ready (see loadFileContents), thus the event loop will eventually | |
| 149 // catch the invokation we throw here and send us back. | |
| 150 if (isOnForeground()) | |
| 151 QMetaObject::invokeMethod (this, "work", Qt::QueuedConnection, Q_ARG (int, i)); | |
| 152 else | |
| 153 work (i); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 void DocumentLoader::abort() | |
| 158 { | |
| 159 m_hasAborted = true; | |
| 160 } |
