Initial import of statemachine branch from the old kinetic repository

1 files changed, 143 insertions, 0 deletions

diff --git a/src/corelib/animation/qvariantanimation_p.h b/src/corelib/animation/qvariantanimation_p.h
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+++ b/src/corelib/animation/qvariantanimation_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QANIMATION_P_H
+#define QANIMATION_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of QIODevice. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qvariantanimation.h"
+#if defined(QT_EXPERIMENTAL_SOLUTION)
+# include "qeasingcurve.h"
+#else
+# include <QtCore/qeasingcurve.h>
+#endif
+#include <QtCore/qmetaobject.h>
+#include <QtCore/qvector.h>
+
+#include "qabstractanimation_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q_CORE_EXPORT QVariantAnimationPrivate : public QAbstractAnimationPrivate
+{
+    Q_DECLARE_PUBLIC(QVariantAnimation)
+public:
+
+    QVariantAnimationPrivate() : duration(250), hasStartValue(false)
+    {
+    }
+
+    void init()
+    {
+        //we keep the mask so that we emit valueChanged only when needed (for performance reasons)
+        changedSignalMask = (1 << q_func()->metaObject()->indexOfSignal("valueChanged(QVariant)"));
+        currentInterval.start.first = currentInterval.end.first = 2; //will force the initial refresh
+        interpolator = 0;
+    }
+
+    static QVariantAnimationPrivate *get(QVariantAnimation *q)
+    {
+        return q->d_func();
+    }
+
+    
+    //some helper functions
+    bool atBeginning() const
+    {
+        return currentTime == 0;
+    }
+
+    bool atEnd() const
+    {
+        return currentTime == duration && currentIteration == (iterationCount - 1);
+    }
+
+    void setDefaultStartValue(const QVariant &value);
+
+    int duration;
+    QEasingCurve easing;
+
+    QVariantAnimation::KeyValues keyValues;
+    QVariant currentValue;
+    QVariant defaultStartValue;
+    bool hasStartValue;
+   
+    //this is used to keep track of the KeyValue interval in which we currently are
+    struct
+    {
+        QVariantAnimation::KeyValue start, end;
+    } currentInterval;
+
+    mutable QVariantAnimation::Interpolator interpolator;
+
+    quint32 changedSignalMask;
+
+    void updateCurrentValue();
+    void setValueAt(qreal, const QVariant &);
+    QVariant valueAt(qreal step) const;
+    void convertValues(int t);
+};
+
+//this should make the interpolation faster
+template<typename T> inline T _q_interpolate(const T &f, const T &t, qreal progress)
+{
+    return T(f + (t - f) * progress);
+}
+
+template<typename T > inline QVariant _q_interpolateVariant(const T &from, const T &to, qreal progress)
+{
+    return _q_interpolate(from, to, progress);
+}
+
+
+QT_END_NAMESPACE
+
+#endif //QANIMATION_P_H