--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/declarative/util/qdeclarativetimeline.cpp Tue Jul 06 15:10:48 2010 +0300
@@ -0,0 +1,947 @@
+/****************************************************************************
+**
+** 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 "private/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
+ \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 (acceleration == 0.0f)
+ return -1;
+
+ 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)
+{
+ if (maxDistance == 0.0f || acceleration == 0.0f)
+ return -1;
+
+ 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
+ \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