src/corelib/animation/qsequentialanimationgroup_p.h

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
   4 ** All rights reserved.
   5 ** Contact: Nokia Corporation (qt-info@nokia.com)
   6 **
   7 ** This file is part of the QtCore module of the Qt Toolkit.
   8 **
   9 ** $QT_BEGIN_LICENSE:LGPL$
  10 ** No Commercial Usage
  11 ** This file contains pre-release code and may not be distributed.
  12 ** You may use this file in accordance with the terms and conditions
  13 ** contained in the Technology Preview License Agreement accompanying
  14 ** this package.
  15 **
  16 ** GNU Lesser General Public License Usage
  17 ** Alternatively, this file may be used under the terms of the GNU Lesser
  18 ** General Public License version 2.1 as published by the Free Software
  19 ** Foundation and appearing in the file LICENSE.LGPL included in the
  20 ** packaging of this file.  Please review the following information to
  21 ** ensure the GNU Lesser General Public License version 2.1 requirements
  22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  23 **
  24 ** In addition, as a special exception, Nokia gives you certain additional
  25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
  26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  27 **
  28 ** If you have questions regarding the use of this file, please contact
  29 ** Nokia at qt-info@nokia.com.
  30 **
  31 **
  32 **
  33 **
  34 **
  35 **
  36 **
  37 **
  38 ** $QT_END_LICENSE$
  39 **
  40 ****************************************************************************/
  41
  42 #ifndef QSEQUENTIALANIMATIONGROUP_P_H
  43 #define QSEQUENTIALANIMATIONGROUP_P_H
  44
  45 //
  46 //  W A R N I N G
  47 //  -------------
  48 //
  49 // This file is not part of the Qt API.  It exists for the convenience
  50 // of QIODevice. This header file may change from version to
  51 // version without notice, or even be removed.
  52 //
  53 // We mean it.
  54 //
  55
  56 #include "qsequentialanimationgroup.h"
  57 #include "private/qanimationgroup_p.h"
  58
  59 #ifndef QT_NO_ANIMATION
  60
  61 QT_BEGIN_NAMESPACE
  62
  63 class QSequentialAnimationGroupPrivate : public QAnimationGroupPrivate
  64 {
  65     Q_DECLARE_PUBLIC(QSequentialAnimationGroup)
  66 public:
  67     QSequentialAnimationGroupPrivate()
  68         : currentAnimation(0), currentAnimationIndex(-1), lastLoop(0)
  69     { }
  70
  71
  72     struct AnimationIndex
  73     {
  74         AnimationIndex() : index(0), timeOffset(0) {}
  75         // index points to the animation at timeOffset, skipping 0 duration animations.
  76         // Note that the index semantic is slightly different depending on the direction.
  77         int index; // the index of the animation in timeOffset
  78         int timeOffset; // time offset when the animation at index starts.
  79     };
  80
  81     int animationActualTotalDuration(int index) const;
  82     AnimationIndex indexForCurrentTime() const;
  83
  84     void setCurrentAnimation(int index, bool intermediate = false);
  85     void activateCurrentAnimation(bool intermediate = false);
  86
  87     void animationInsertedAt(int index);
  88     void animationRemovedAt(int index);
  89
  90     bool atEnd() const;
  91
  92     QAbstractAnimation *currentAnimation;
  93     int currentAnimationIndex;
  94
  95     // this is the actual duration of uncontrolled animations
  96     // it helps seeking and even going forward
  97     QList<int> actualDuration;
  98
  99     void restart();
 100     int lastLoop;
 101
 102     // handle time changes
 103     void rewindForwards(const AnimationIndex &newAnimationIndex);
 104     void advanceForwards(const AnimationIndex &newAnimationIndex);
 105
 106     // private slot
 107     void _q_uncontrolledAnimationFinished();
 108 };
 109
 110 QT_END_NAMESPACE
 111
 112 #endif //QT_NO_ANIMATION
 113
 114 #endif //QSEQUENTIALANIMATIONGROUP_P_H