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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtCore module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef ANIMATION_H |
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43 #define ANIMATION_H |
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44 |
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45 #include <QtGui> |
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46 |
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47 #include <QtCore/qpropertyanimation.h> |
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48 |
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49 class Animation : public QPropertyAnimation { |
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50 public: |
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51 enum PathType { |
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52 LinearPath, |
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53 CirclePath, |
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54 NPathTypes |
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55 }; |
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56 Animation(QObject *target, const QByteArray &prop) |
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57 : QPropertyAnimation(target, prop) |
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58 { |
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59 setPathType(LinearPath); |
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60 } |
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61 |
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62 void setPathType(PathType pathType) |
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63 { |
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64 if (pathType >= NPathTypes) |
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65 qWarning("Unknown pathType %d", pathType); |
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66 |
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67 m_pathType = pathType; |
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68 m_path = QPainterPath(); |
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69 } |
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70 |
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71 void updateCurrentTime(int currentTime) |
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72 { |
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73 if (m_pathType == CirclePath) { |
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74 if (m_path.isEmpty()) { |
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75 QPointF to = endValue().toPointF(); |
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76 QPointF from = startValue().toPointF(); |
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77 m_path.moveTo(from); |
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78 m_path.addEllipse(QRectF(from, to)); |
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79 } |
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80 int dura = duration(); |
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81 const qreal progress = ((dura == 0) ? 1 : ((((currentTime - 1) % dura) + 1) / qreal(dura))); |
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82 |
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83 qreal easedProgress = easingCurve().valueForProgress(progress); |
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84 if (easedProgress > 1.0) { |
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85 easedProgress -= 1.0; |
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86 } else if (easedProgress < 0) { |
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87 easedProgress += 1.0; |
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88 } |
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89 QPointF pt = m_path.pointAtPercent(easedProgress); |
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90 updateCurrentValue(pt); |
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91 emit valueChanged(pt); |
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92 } else { |
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93 QPropertyAnimation::updateCurrentTime(currentTime); |
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94 } |
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95 } |
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96 |
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97 QPainterPath m_path; |
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98 PathType m_pathType; |
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99 }; |
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100 |
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101 #endif // ANIMATION_H |