1 /**************************************************************************** 2 3 Copyright (C) 2002-2014 Gilles Debunne. All rights reserved. 4 5 This file is part of the QGLViewer library version 2.7.2. 6 7 http://www.libqglviewer.com - contact@libqglviewer.com 8 9 This file may be used under the terms of the GNU General Public License 10 versions 2.0 or 3.0 as published by the Free Software Foundation and 11 appearing in the LICENSE file included in the packaging of this file. 12 In addition, as a special exception, Gilles Debunne gives you certain 13 additional rights, described in the file GPL_EXCEPTION in this package. 14 15 libQGLViewer uses dual licensing. Commercial/proprietary software must 16 purchase a libQGLViewer Commercial License. 17 18 This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 19 WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 21 *****************************************************************************/ 22 23 #include "undo.h" 24 #include <qstring.h> 25 clear()26void Undo::clear() { 27 index_ = 0; 28 maxIndex_ = 0; 29 state_.clear(); 30 } 31 addState(const QString & s)32void Undo::addState(const QString &s) { 33 if (index_ < int(state_.size())) 34 state_[index_] = s; 35 else 36 state_.append(s); 37 38 index_++; 39 maxIndex_ = index_; 40 } 41 undoState()42QString Undo::undoState() { 43 if (index_ > 1) { 44 index_--; 45 return state_[index_ - 1]; 46 } else 47 return QString(); 48 } 49 redoState()50QString Undo::redoState() { 51 if (index_ < maxIndex_) { 52 index_++; 53 return state_[index_ - 1]; 54 } else 55 return QString(); 56 } 57 operator <<(std::ostream & out,const Undo & u)58std::ostream &operator<<(std::ostream &out, const Undo &u) { 59 out << std::endl << u.index_ << ' ' << u.maxIndex_ << std::endl; 60 61 for (int i = 0; i < u.maxIndex_; ++i) 62 #if QT_VERSION < 0x040000 63 out << u.state_[i].ascii() << std::endl; 64 #else 65 out << u.state_[i].toLatin1().constData() << std::endl; 66 #endif 67 68 return out; 69 } 70 operator >>(std::istream & in,Undo & u)71std::istream &operator>>(std::istream &in, Undo &u) { 72 u.state_.clear(); 73 u.index_ = u.maxIndex_ = 0; 74 in >> u.index_ >> u.maxIndex_; 75 76 char str[10000]; 77 for (int i = 0; i < u.maxIndex_; ++i) { 78 in >> str; 79 u.state_.append(str); 80 } 81 82 return in; 83 } 84