Change class prefix to from QmlXXX to QDeclarativeXXX, QmlGraphicsXXX to QDeclarativeXXX.

1 files changed, 942 insertions, 0 deletions

diff --git a/src/declarative/util/qdeclarativetimeline.cpp b/src/declarative/util/qdeclarativetimeline.cpp
new file mode 100644
index 0000000..8e133b6
--- /dev/null
+++ b/src/declarative/util/qdeclarativetimeline.cpp
@@ -0,0 +1,942 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeclarativetimeline_p_p.h"
+
+#include <QDebug>
+#include <QMutex>
+#include <QThread>
+#include <QWaitCondition>
+#include <QEvent>
+#include <QCoreApplication>
+#include <QEasingCurve>
+#include <QTime>
+
+QT_BEGIN_NAMESPACE
+
+struct Update {
+    Update(QDeclarativeTimeLineValue *_g, qreal _v)
+        : g(_g), v(_v) {}
+    Update(const QDeclarativeTimeLineCallback &_e)
+        : g(0), v(0), e(_e) {}
+
+    QDeclarativeTimeLineValue *g;
+    qreal v;
+    QDeclarativeTimeLineCallback e;
+};
+
+struct QDeclarativeTimeLinePrivate
+{
+    QDeclarativeTimeLinePrivate(QDeclarativeTimeLine *);
+
+    struct Op {
+        enum Type {
+            Pause,
+            Set,
+            Move,
+            MoveBy,
+            Accel,
+            AccelDistance,
+            Execute
+        };
+        Op() {}
+        Op(Type t, int l, qreal v, qreal v2, int o, 
+           const QDeclarativeTimeLineCallback &ev = QDeclarativeTimeLineCallback(), const QEasingCurve &es = QEasingCurve())
+            : type(t), length(l), value(v), value2(v2), order(o), event(ev),
+              easing(es) {}
+        Op(const Op &o)
+            : type(o.type), length(o.length), value(o.value), value2(o.value2),
+              order(o.order), event(o.event), easing(o.easing) {}
+        Op &operator=(const Op &o) {
+            type = o.type; length = o.length; value = o.value; 
+            value2 = o.value2; order = o.order; event = o.event; 
+            easing = o.easing;
+            return *this;
+        }
+
+        Type type;
+        int length;
+        qreal value;
+        qreal value2;
+
+        int order;
+        QDeclarativeTimeLineCallback event;
+        QEasingCurve easing;
+    };
+    struct TimeLine
+    {
+        TimeLine() : length(0), consumedOpLength(0), base(0.) {}
+        QList<Op> ops;
+        int length;
+        int consumedOpLength;
+        qreal base;
+    };
+
+    int length;
+    int syncPoint;
+    typedef QHash<QDeclarativeTimeLineObject *, TimeLine> Ops;
+    Ops ops;
+    QDeclarativeTimeLine *q;
+
+    void add(QDeclarativeTimeLineObject &, const Op &);
+    qreal value(const Op &op, int time, qreal base, bool *) const;
+
+    int advance(int);
+
+    bool clockRunning;
+    int prevTime;
+
+    int order;
+
+    QDeclarativeTimeLine::SyncMode syncMode;
+    int syncAdj;
+    QList<QPair<int, Update> > *updateQueue;
+};
+
+QDeclarativeTimeLinePrivate::QDeclarativeTimeLinePrivate(QDeclarativeTimeLine *parent)
+: length(0), syncPoint(0), q(parent), clockRunning(false), prevTime(0), order(0), syncMode(QDeclarativeTimeLine::LocalSync), syncAdj(0), updateQueue(0)
+{
+}
+
+void QDeclarativeTimeLinePrivate::add(QDeclarativeTimeLineObject &g, const Op &o)
+{
+    if (g._t && g._t != q) {
+        qWarning() << "QDeclarativeTimeLine: Cannot modify a QDeclarativeTimeLineValue owned by"
+                   << "another timeline.";
+        return;
+    }
+    g._t = q;
+
+    Ops::Iterator iter = ops.find(&g);
+    if (iter == ops.end()) {
+        iter = ops.insert(&g, TimeLine());
+        if (syncPoint > 0)
+            q->pause(g, syncPoint);
+    }
+    if (!iter->ops.isEmpty() &&
+       o.type == Op::Pause &&
+       iter->ops.last().type == Op::Pause) {
+        iter->ops.last().length += o.length;
+        iter->length += o.length;
+    } else {
+        iter->ops.append(o);
+        iter->length += o.length;
+    }
+
+    if (iter->length > length)
+        length = iter->length;
+
+    if (!clockRunning) {
+        q->stop();
+        prevTime = 0;
+        clockRunning = true;
+
+        if (syncMode == QDeclarativeTimeLine::LocalSync)  {
+            syncAdj = -1;
+        } else {
+            syncAdj = 0;
+        }
+        q->start();
+/*        q->tick(0);
+        if (syncMode == QDeclarativeTimeLine::LocalSync)  {
+            syncAdj = -1;
+        } else {
+            syncAdj = 0;
+        }
+        */
+    }
+}
+
+qreal QDeclarativeTimeLinePrivate::value(const Op &op, int time, qreal base, bool *changed) const
+{
+    Q_ASSERT(time >= 0);
+    Q_ASSERT(time <= op.length);
+    *changed = true;
+
+    switch(op.type) {
+        case Op::Pause:
+            *changed = false;
+            return base;
+        case Op::Set:
+            return op.value;
+        case Op::Move:
+            if (time == 0) {
+                return base;
+            } else if (time == (op.length)) {
+                return op.value;
+            } else {
+                qreal delta = op.value - base;
+                qreal pTime = (qreal)(time) / (qreal)op.length;
+                if (op.easing.type() == QEasingCurve::Linear)
+                    return base + delta * pTime;
+                else
+                    return base + delta * op.easing.valueForProgress(pTime);
+            }
+        case Op::MoveBy:
+            if (time == 0) {
+                return base;
+            } else if (time == (op.length)) {
+                return base + op.value;
+            } else {
+                qreal delta = op.value;
+                qreal pTime = (qreal)(time) / (qreal)op.length;
+                if (op.easing.type() == QEasingCurve::Linear)
+                    return base + delta * pTime;
+                else
+                    return base + delta * op.easing.valueForProgress(pTime);
+            }
+        case Op::Accel:
+            if (time == 0) {
+                return base;
+            } else {
+                qreal t = (qreal)(time) / 1000.0f;
+                qreal delta = op.value * t + 0.5f * op.value2 * t * t;
+                return base + delta;
+            }
+        case Op::AccelDistance:
+            if (time == 0) {
+                return base;
+            } else if (time == (op.length)) {
+                return base + op.value2;
+            } else {
+                qreal t = (qreal)(time) / 1000.0f;
+                qreal accel = -1.0f * 1000.0f * op.value / (qreal)op.length;
+                qreal delta = op.value * t + 0.5f * accel * t * t;
+                return base + delta;
+
+            }
+        case Op::Execute:
+            op.event.d0(op.event.d1);
+            *changed = false;
+            return -1;
+    }
+
+    return base;
+}
+
+/*!
+    \internal
+    \class QDeclarativeTimeLine
+    \ingroup group_animation
+    \brief The QDeclarativeTimeLine class provides a timeline for controlling animations.
+
+    QDeclarativeTimeLine is similar to QTimeLine except:
+    \list
+    \i It updates QDeclarativeTimeLineValue instances directly, rather than maintaining a single
+    current value.
+
+    For example, the following animates a simple value over 200 milliseconds:
+    \code
+    QDeclarativeTimeLineValue v(<starting value>);
+    QDeclarativeTimeLine tl;
+    tl.move(v, 100., 200);
+    tl.start()
+    \endcode
+
+    If your program needs to know when values are changed, it can either
+    connect to the QDeclarativeTimeLine's updated() signal, or inherit from QDeclarativeTimeLineValue
+    and reimplement the QDeclarativeTimeLineValue::setValue() method.
+
+    \i Supports multiple QDeclarativeTimeLineValue, arbitrary start and end values and allows
+    animations to be strung together for more complex effects.
+
+    For example, the following animation moves the x and y coordinates of
+    an object from wherever they are to the position (100, 100) in 50
+    milliseconds and then further animates them to (100, 200) in 50
+    milliseconds:
+
+    \code
+    QDeclarativeTimeLineValue x(<starting value>);
+    QDeclarativeTimeLineValue y(<starting value>);
+
+    QDeclarativeTimeLine tl;
+    tl.start();
+
+    tl.move(x, 100., 50);
+    tl.move(y, 100., 50);
+    tl.move(y, 200., 50);
+    \endcode
+
+    \i All QDeclarativeTimeLine instances share a single, synchronized clock.
+
+    Actions scheduled within the same event loop tick are scheduled
+    synchronously against each other, regardless of the wall time between the
+    scheduling.  Synchronized scheduling applies both to within the same
+    QDeclarativeTimeLine and across separate QDeclarativeTimeLine's within the same process.
+
+    \endlist
+
+    Currently easing functions are not supported.
+*/
+
+
+/*!
+    Construct a new QDeclarativeTimeLine with the specified \a parent.
+*/
+QDeclarativeTimeLine::QDeclarativeTimeLine(QObject *parent)
+: QAbstractAnimation(parent)
+{
+    d = new QDeclarativeTimeLinePrivate(this);
+}
+
+/*!
+    Destroys the time line.  Any inprogress animations are canceled, but not
+    completed.
+*/
+QDeclarativeTimeLine::~QDeclarativeTimeLine()
+{
+    for (QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.begin();
+            iter != d->ops.end();
+            ++iter)
+        iter.key()->_t = 0;
+
+    delete d; d = 0;
+}
+
+/*!
+    \enum QDeclarativeTimeLine::SyncMode
+ */
+
+/*!
+    Return the timeline's synchronization mode.
+ */
+QDeclarativeTimeLine::SyncMode QDeclarativeTimeLine::syncMode() const
+{
+    return d->syncMode;
+}
+
+/*!
+    Set the timeline's synchronization mode to \a syncMode.
+ */
+void QDeclarativeTimeLine::setSyncMode(SyncMode syncMode)
+{
+    d->syncMode = syncMode;
+}
+
+/*!
+    Pause \a obj for \a time milliseconds.
+*/
+void QDeclarativeTimeLine::pause(QDeclarativeTimeLineObject &obj, int time)
+{
+    if (time <= 0) return;
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Pause, time, 0., 0., d->order++);
+    d->add(obj, op);
+}
+
+/*!
+    Execute the \a event.
+ */
+void QDeclarativeTimeLine::callback(const QDeclarativeTimeLineCallback &callback)
+{
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Execute, 0, 0, 0., d->order++, callback);
+    d->add(*callback.callbackObject(), op);
+}
+
+/*!
+    Set the \a value of \a timeLineValue.
+*/
+void QDeclarativeTimeLine::set(QDeclarativeTimeLineValue &timeLineValue, qreal value)
+{
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Set, 0, value, 0., d->order++);
+    d->add(timeLineValue, op);
+}
+
+/*!
+    Decelerate \a timeLineValue from the starting \a velocity to zero at the
+    given \a acceleration rate.  Although the \a acceleration is technically
+    a deceleration, it should always be positive.  The QDeclarativeTimeLine will ensure
+    that the deceleration is in the opposite direction to the initial velocity.
+*/
+int QDeclarativeTimeLine::accel(QDeclarativeTimeLineValue &timeLineValue, qreal velocity, qreal acceleration)
+{
+    if ((velocity > 0.0f) ==  (acceleration > 0.0f))
+        acceleration = acceleration * -1.0f;
+
+    int time = static_cast<int>(-1000 * velocity / acceleration);
+
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Accel, time, velocity, acceleration, d->order++);
+    d->add(timeLineValue, op);
+
+    return time;
+}
+
+/*!
+    \overload
+
+    Decelerate \a timeLineValue from the starting \a velocity to zero at the
+    given \a acceleration rate over a maximum distance of maxDistance.
+
+    If necessary, QDeclarativeTimeLine will reduce the acceleration to ensure that the
+    entire operation does not require a move of more than \a maxDistance.
+    \a maxDistance should always be positive.
+*/
+int QDeclarativeTimeLine::accel(QDeclarativeTimeLineValue &timeLineValue, qreal velocity, qreal acceleration, qreal maxDistance)
+{
+    Q_ASSERT(acceleration >= 0.0f && maxDistance >= 0.0f);
+
+    qreal maxAccel = (velocity * velocity) / (2.0f * maxDistance);
+    if (maxAccel > acceleration)
+        acceleration = maxAccel;
+
+    if ((velocity > 0.0f) ==  (acceleration > 0.0f))
+        acceleration = acceleration * -1.0f;
+
+    int time = static_cast<int>(-1000 * velocity / acceleration);
+
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Accel, time, velocity, acceleration, d->order++);
+    d->add(timeLineValue, op);
+
+    return time;
+}
+
+/*!
+    Decelerate \a timeLineValue from the starting \a velocity to zero over the given
+    \a distance.  This is like accel(), but the QDeclarativeTimeLine calculates the exact
+    deceleration to use.
+
+    \a distance should be positive.
+*/
+int QDeclarativeTimeLine::accelDistance(QDeclarativeTimeLineValue &timeLineValue, qreal velocity, qreal distance)
+{
+    if (distance == 0.0f || velocity == 0.0f)
+        return -1;
+    Q_ASSERT((distance >= 0.0f) == (velocity >= 0.0f));
+
+    int time = static_cast<int>(1000 * (2.0f * distance) / velocity);
+
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::AccelDistance, time, velocity, distance, d->order++);
+    d->add(timeLineValue, op);
+
+    return time;
+}
+
+/*!
+    Linearly change the \a timeLineValue from its current value to the given
+    \a destination value over \a time milliseconds.
+*/
+void QDeclarativeTimeLine::move(QDeclarativeTimeLineValue &timeLineValue, qreal destination, int time)
+{
+    if (time <= 0) return;
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Move, time, destination, 0.0f, d->order++);
+    d->add(timeLineValue, op);
+}
+
+/*!
+    Change the \a timeLineValue from its current value to the given \a destination
+    value over \a time milliseconds using the \a easing curve.
+ */
+void QDeclarativeTimeLine::move(QDeclarativeTimeLineValue &timeLineValue, qreal destination, const QEasingCurve &easing, int time)
+{
+    if (time <= 0) return;
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::Move, time, destination, 0.0f, d->order++, QDeclarativeTimeLineCallback(), easing);
+    d->add(timeLineValue, op);
+}
+
+/*!
+    Linearly change the \a timeLineValue from its current value by the \a change amount
+    over \a time milliseconds.
+*/
+void QDeclarativeTimeLine::moveBy(QDeclarativeTimeLineValue &timeLineValue, qreal change, int time)
+{
+    if (time <= 0) return;
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::MoveBy, time, change, 0.0f, d->order++);
+    d->add(timeLineValue, op);
+}
+
+/*!
+    Change the \a timeLineValue from its current value by the \a change amount over
+    \a time milliseconds using the \a easing curve.
+ */
+void QDeclarativeTimeLine::moveBy(QDeclarativeTimeLineValue &timeLineValue, qreal change, const QEasingCurve &easing, int time)
+{
+    if (time <= 0) return;
+    QDeclarativeTimeLinePrivate::Op op(QDeclarativeTimeLinePrivate::Op::MoveBy, time, change, 0.0f, d->order++, QDeclarativeTimeLineCallback(), easing);
+    d->add(timeLineValue, op);
+}
+
+/*!
+    Cancel (but don't complete) all scheduled actions for \a timeLineValue.
+*/
+void QDeclarativeTimeLine::reset(QDeclarativeTimeLineValue &timeLineValue)
+{
+    if (!timeLineValue._t)
+        return;
+    if (timeLineValue._t != this) {
+        qWarning() << "QDeclarativeTimeLine: Cannot reset a QDeclarativeTimeLineValue owned by another timeline.";
+        return;
+    }
+    remove(&timeLineValue);
+    timeLineValue._t = 0;
+}
+
+int QDeclarativeTimeLine::duration() const
+{
+    return -1;
+}
+
+/*!
+    Synchronize the end point of \a timeLineValue to the endpoint of \a syncTo
+    within this timeline.
+
+    Following operations on \a timeLineValue in this timeline will be scheduled after
+    all the currently scheduled actions on \a syncTo are complete.  In
+    psuedo-code this is equivalent to:
+    \code
+    QDeclarativeTimeLine::pause(timeLineValue, min(0, length_of(syncTo) - length_of(timeLineValue)))
+    \endcode
+*/
+void QDeclarativeTimeLine::sync(QDeclarativeTimeLineValue &timeLineValue, QDeclarativeTimeLineValue &syncTo)
+{
+    QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.find(&syncTo);
+    if (iter == d->ops.end())
+        return;
+    int length = iter->length;
+
+    iter = d->ops.find(&timeLineValue);
+    if (iter == d->ops.end()) {
+        pause(timeLineValue, length);
+    } else {
+        int glength = iter->length;
+        pause(timeLineValue, length - glength);
+    }
+}
+
+/*!
+    Synchronize the end point of \a timeLineValue to the endpoint of the longest
+    action cursrently scheduled in the timeline.
+
+    In psuedo-code, this is equivalent to:
+    \code
+    QDeclarativeTimeLine::pause(timeLineValue, length_of(timeline) - length_of(timeLineValue))
+    \endcode
+*/
+void QDeclarativeTimeLine::sync(QDeclarativeTimeLineValue &timeLineValue)
+{
+    QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.find(&timeLineValue);
+    if (iter == d->ops.end()) {
+        pause(timeLineValue, d->length);
+    } else {
+        pause(timeLineValue, d->length - iter->length);
+    }
+}
+
+/*
+    Synchronize all currently and future scheduled values in this timeline to
+    the longest action currently scheduled.
+
+    For example:
+    \code
+    value1->setValue(0.);
+    value2->setValue(0.);
+    value3->setValue(0.);
+    QDeclarativeTimeLine tl;
+    ...
+    tl.move(value1, 10, 200);
+    tl.move(value2, 10, 100);
+    tl.sync();
+    tl.move(value2, 20, 100);
+    tl.move(value3, 20, 100);
+    \endcode
+
+    will result in:
+
+    \table
+    \header \o \o 0ms \o 50ms \o 100ms \o 150ms \o 200ms \o 250ms \o 300ms
+    \row \o value1 \o 0 \o 2.5 \o 5.0 \o 7.5 \o 10 \o 10 \o 10
+    \row \o value2 \o 0 \o 5.0 \o 10.0 \o 10.0 \o 10.0 \o 15.0 \o 20.0
+    \row \o value2 \o 0 \o 0 \o 0 \o 0 \o 0 \o 10.0 \o 20.0
+    \endtable
+*/
+
+/*void QDeclarativeTimeLine::sync()
+{
+    for (QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.begin();
+            iter != d->ops.end();
+            ++iter)
+        pause(*iter.key(), d->length - iter->length);
+    d->syncPoint = d->length;
+}*/
+
+/*! 
+    \internal 
+
+    Temporary hack.
+ */
+void QDeclarativeTimeLine::setSyncPoint(int sp)
+{
+    d->syncPoint = sp;
+}
+
+/*! 
+    \internal 
+ 
+    Temporary hack.
+ */
+int QDeclarativeTimeLine::syncPoint() const
+{
+    return d->syncPoint;
+}
+
+/*!
+    Returns true if the timeline is active.  An active timeline is one where
+    QDeclarativeTimeLineValue actions are still pending.
+*/
+bool QDeclarativeTimeLine::isActive() const
+{
+    return !d->ops.isEmpty();
+}
+
+/*!
+    Completes the timeline.  All queued actions are played to completion, and then discarded.  For example,
+    \code
+    QDeclarativeTimeLineValue v(0.);
+    QDeclarativeTimeLine tl;
+    tl.move(v, 100., 1000.);
+    // 500 ms passes
+    // v.value() == 50.
+    tl.complete();
+    // v.value() == 100.
+    \endcode
+*/
+void QDeclarativeTimeLine::complete()
+{
+    d->advance(d->length);
+}
+
+/*!
+    Resets the timeline.  All queued actions are discarded and QDeclarativeTimeLineValue's retain their current value. For example,
+    \code
+    QDeclarativeTimeLineValue v(0.);
+    QDeclarativeTimeLine tl;
+    tl.move(v, 100., 1000.);
+    // 500 ms passes
+    // v.value() == 50.
+    tl.clear();
+    // v.value() == 50.
+    \endcode
+*/
+void QDeclarativeTimeLine::clear()
+{
+    for (QDeclarativeTimeLinePrivate::Ops::ConstIterator iter = d->ops.begin(); iter != d->ops.end(); ++iter)
+        iter.key()->_t = 0;
+    d->ops.clear();
+    d->length = 0;
+    d->syncPoint = 0;
+    //XXX need stop here?
+}
+
+int QDeclarativeTimeLine::time() const
+{
+    return d->prevTime;
+}
+
+/*!
+    \fn void QDeclarativeTimeLine::updated()
+
+    Emitted each time the timeline modifies QDeclarativeTimeLineValues.  Even if multiple
+    QDeclarativeTimeLineValues are changed, this signal is only emitted once for each clock tick.
+*/
+
+void QDeclarativeTimeLine::updateCurrentTime(int v)
+{
+    if (d->syncAdj == -1)
+        d->syncAdj = v;
+    v -= d->syncAdj;
+
+    int timeChanged = v - d->prevTime;
+#if 0
+    if (!timeChanged)
+        return;
+#endif
+    d->prevTime = v;
+    d->advance(timeChanged);
+    emit updated();
+
+    // Do we need to stop the clock?
+    if (d->ops.isEmpty()) {
+        stop();
+        d->prevTime = 0;
+        d->clockRunning = false;
+        emit completed();
+    } /*else if (pauseTime > 0) {
+        GfxClock::cancelClock();
+        d->prevTime = 0;
+        GfxClock::pauseFor(pauseTime);
+        d->syncAdj = 0;
+        d->clockRunning = false;
+    }*/ else if (/*!GfxClock::isActive()*/ state() != Running) {
+        stop();
+        d->prevTime = 0;
+        d->clockRunning = true;
+        d->syncAdj = 0;
+        start();
+    }
+}
+
+bool operator<(const QPair<int, Update> &lhs,
+               const QPair<int, Update> &rhs)
+{
+    return lhs.first < rhs.first;
+}
+
+int QDeclarativeTimeLinePrivate::advance(int t)
+{
+    int pauseTime = -1;
+
+    // XXX - surely there is a more efficient way?
+    do {
+        pauseTime = -1;
+        // Minimal advance time
+        int advanceTime = t;
+        for (Ops::Iterator iter = ops.begin(); iter != ops.end(); ++iter) {
+            TimeLine &tl = *iter;
+            Op &op = tl.ops.first();
+            int length = op.length - tl.consumedOpLength;
+                
+            if (length < advanceTime) {
+                advanceTime = length;
+                if (advanceTime == 0)
+                    break;
+            }
+        }
+        t -= advanceTime;
+
+        // Process until then.  A zero length advance time will only process 
+        // sets.
+        QList<QPair<int, Update> > updates;
+
+        for (Ops::Iterator iter = ops.begin(); iter != ops.end(); ) {
+            QDeclarativeTimeLineValue *v = static_cast<QDeclarativeTimeLineValue *>(iter.key());
+            TimeLine &tl = *iter;
+            Q_ASSERT(!tl.ops.isEmpty());
+
+            do {
+                Op &op = tl.ops.first();
+                if (advanceTime == 0 && op.length != 0)
+                    continue;
+
+                if (tl.consumedOpLength == 0 && 
+                   op.type != Op::Pause && 
+                   op.type != Op::Execute)
+                    tl.base = v->value();
+
+                if ((tl.consumedOpLength + advanceTime) == op.length) {
+                    if (op.type == Op::Execute) {
+                        updates << qMakePair(op.order, Update(op.event));
+                    } else {
+                        bool changed = false;
+                        qreal val = value(op, op.length, tl.base, &changed);
+                        if (changed)
+                            updates << qMakePair(op.order, Update(v, val));
+                    }
+                    tl.length -= qMin(advanceTime, tl.length);
+                    tl.consumedOpLength = 0;
+                    tl.ops.removeFirst();
+                } else {
+                    tl.consumedOpLength += advanceTime;
+                    bool changed = false;
+                    qreal val = value(op, tl.consumedOpLength, tl.base, &changed);
+                    if (changed)
+                        updates << qMakePair(op.order, Update(v, val));
+                    tl.length -= qMin(advanceTime, tl.length);
+                    break;
+                }
+
+            } while(!tl.ops.isEmpty() && advanceTime == 0 && tl.ops.first().length == 0);
+
+
+            if (tl.ops.isEmpty()) {
+                iter = ops.erase(iter);
+                v->_t = 0;
+            } else {
+                if (tl.ops.first().type == Op::Pause && pauseTime != 0) {
+                    int opPauseTime = tl.ops.first().length - tl.consumedOpLength;
+                    if (pauseTime == -1 || opPauseTime < pauseTime)
+                        pauseTime = opPauseTime;
+                } else {
+                    pauseTime = 0;
+                }
+                ++iter;
+            }
+        }
+
+        length -= qMin(length, advanceTime);
+        syncPoint -= advanceTime;
+
+        qSort(updates.begin(), updates.end());
+        updateQueue = &updates;
+        for (int ii = 0; ii < updates.count(); ++ii) {
+            const Update &v = updates.at(ii).second;
+            if (v.g) {
+                v.g->setValue(v.v);
+            } else {
+                v.e.d0(v.e.d1);
+            }
+        }
+        updateQueue = 0;
+    } while(t);
+
+    return pauseTime;
+}
+
+void QDeclarativeTimeLine::remove(QDeclarativeTimeLineObject *v)
+{
+    QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.find(v);
+    Q_ASSERT(iter != d->ops.end());
+
+    int len = iter->length;
+    d->ops.erase(iter);
+    if (len == d->length) {
+        // We need to recalculate the length
+        d->length = 0;
+        for (QDeclarativeTimeLinePrivate::Ops::Iterator iter = d->ops.begin();
+                iter != d->ops.end();
+                ++iter) {
+
+            if (iter->length > d->length)
+                d->length = iter->length;
+
+        }
+    }
+    if (d->ops.isEmpty()) {
+        stop();
+        d->clockRunning = false;
+    } else if (/*!GfxClock::isActive()*/ state() != Running) {
+        stop();
+        d->prevTime = 0;
+        d->clockRunning = true;
+
+        if (d->syncMode == QDeclarativeTimeLine::LocalSync) {
+            d->syncAdj = -1;
+        } else {
+            d->syncAdj = 0;
+        }
+        start();
+    }
+
+    if (d->updateQueue) {
+        for (int ii = 0; ii < d->updateQueue->count(); ++ii) {
+            if (d->updateQueue->at(ii).second.g == v ||
+               d->updateQueue->at(ii).second.e.callbackObject() == v) {
+                d->updateQueue->removeAt(ii);
+                --ii;
+            }
+        }
+    }
+
+
+}
+
+/*!
+    \internal
+    \class QDeclarativeTimeLineValue
+    \ingroup group_animation
+    \brief The QDeclarativeTimeLineValue class provides a value that can be modified by QDeclarativeTimeLine.
+*/
+
+/*!
+    \fn QDeclarativeTimeLineValue::QDeclarativeTimeLineValue(qreal value = 0)
+
+    Construct a new QDeclarativeTimeLineValue with an initial \a value.
+*/
+
+/*!
+    \fn qreal QDeclarativeTimeLineValue::value() const
+
+    Return the current value.
+*/
+
+/*!
+    \fn void QDeclarativeTimeLineValue::setValue(qreal value)
+
+    Set the current \a value.
+*/
+
+/*!
+    \fn QDeclarativeTimeLine *QDeclarativeTimeLineValue::timeLine() const
+
+    If a QDeclarativeTimeLine is operating on this value, return a pointer to it,
+    otherwise return null.
+*/
+
+
+QDeclarativeTimeLineObject::QDeclarativeTimeLineObject()
+: _t(0)
+{
+}
+
+QDeclarativeTimeLineObject::~QDeclarativeTimeLineObject()
+{
+    if (_t) {
+        _t->remove(this);
+        _t = 0;
+    }
+}
+
+QDeclarativeTimeLineCallback::QDeclarativeTimeLineCallback()
+: d0(0), d1(0), d2(0)
+{
+}
+
+QDeclarativeTimeLineCallback::QDeclarativeTimeLineCallback(QDeclarativeTimeLineObject *b, Callback f, void *d)
+: d0(f), d1(d), d2(b)
+{
+}
+
+QDeclarativeTimeLineCallback::QDeclarativeTimeLineCallback(const QDeclarativeTimeLineCallback &o)
+: d0(o.d0), d1(o.d1), d2(o.d2)
+{
+}
+
+QDeclarativeTimeLineCallback &QDeclarativeTimeLineCallback::operator=(const QDeclarativeTimeLineCallback &o)
+{
+    d0 = o.d0;
+    d1 = o.d1;
+    d2 = o.d2;
+    return *this;
+}
+
+QDeclarativeTimeLineObject *QDeclarativeTimeLineCallback::callbackObject() const
+{
+    return d2;
+}
+
+QT_END_NAMESPACE