diff -r 000000000000 -r 1918ee327afb demos/qtdemo/demoitemanimation.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/qtdemo/demoitemanimation.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,219 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 "demoitemanimation.h"
+#include "demoitem.h"
+#include "colors.h"
+
+DemoItemAnimation::DemoItemAnimation(DemoItem *item, INOROUT inOrOut)
+{
+    this->opacityAt0 = 1.0;
+    this->opacityAt1 = 1.0;
+    this->startDelay = 0;
+    this->inOrOut = inOrOut;
+    this->hideOnFinished = false;
+    this->forcePlay = false;
+    this->timeline = new QTimeLine(5000);
+    this->timeline->setFrameRange(0, 2000);
+    this->timeline->setUpdateInterval(int(1000.0/Colors::fps));
+    this->moveOnPlay = false;
+    setTimeLine(this->timeline);
+    setItem(item);
+}
+
+DemoItemAnimation::~DemoItemAnimation()
+{
+    // Do not delete demoitem. It is not
+    // owned by an animation
+    delete this->timeline;
+}
+
+void DemoItemAnimation::prepare()
+{
+    this->demoItem()->prepare();
+}
+
+void DemoItemAnimation::setStartPos(const QPointF &pos){
+    this->startPos = pos;
+}
+
+void DemoItemAnimation::setDuration(int duration)
+{
+    duration = int(duration * Colors::animSpeed);
+    this->timeline->setDuration(duration);
+    this->moveOnPlay = true;
+}
+
+void DemoItemAnimation::setCurrentTime(int ms)
+{
+    this->timeline->setCurrentTime(ms);
+}
+
+bool DemoItemAnimation::notOwnerOfItem()
+{
+    return this != demoItem()->currentAnimation;
+}
+
+void DemoItemAnimation::play(bool fromStart, bool force)
+{
+    this->fromStart = fromStart;
+    this->forcePlay = force;
+
+    QPointF currPos = this->demoItem()->pos();
+
+    // If the item that this animation controls in currently under the
+    // control of another animation, stop that animation first
+    if (this->demoItem()->currentAnimation)
+        this->demoItem()->currentAnimation->timeline->stop();
+    this->demoItem()->currentAnimation = this;
+    this->timeline->stop();
+
+    if (Colors::noAnimations && !this->forcePlay){
+        this->timeline->setCurrentTime(1);
+        this->demoItem()->setPos(this->posAt(1));
+    }
+    else{
+        if (this->demoItem()->isVisible())
+            // If the item is already visible, start the animation from
+            // the items current position rather than from start.
+            this->setPosAt(0.0, currPos);
+        else
+            this->setPosAt(0.0, this->startPos);
+
+        if (this->fromStart){
+            this->timeline->setCurrentTime(0);
+            this->demoItem()->setPos(this->posAt(0));
+        }
+    }
+
+    if (this->inOrOut == ANIM_IN)
+        this->demoItem()->setRecursiveVisible(true);
+
+    if (this->startDelay){
+        QTimer::singleShot(this->startDelay, this, SLOT(playWithoutDelay()));
+        return;
+    }
+    else
+        this->playWithoutDelay();
+}
+
+void DemoItemAnimation::playWithoutDelay()
+{
+    if (this->moveOnPlay && !(Colors::noAnimations && !this->forcePlay))
+        this->timeline->start();
+    this->demoItem()->animationStarted(this->inOrOut);
+}
+
+void DemoItemAnimation::stop(bool reset)
+{
+    this->timeline->stop();
+    if (reset)
+        this->demoItem()->setPos(this->posAt(0));
+    if (this->hideOnFinished && !this->moveOnPlay)
+        this->demoItem()->setRecursiveVisible(false);
+    this->demoItem()->animationStopped(this->inOrOut);
+}
+
+void DemoItemAnimation::setRepeat(int nr)
+{
+    this->timeline->setLoopCount(nr);
+}
+
+void DemoItemAnimation::playReverse()
+{
+}
+
+bool DemoItemAnimation::running()
+{
+    return (this->timeLine()->state() == QTimeLine::Running);
+}
+
+bool DemoItemAnimation::runningOrItemLocked()
+{
+    return (this->running() || this->demoItem()->locked);
+}
+
+void DemoItemAnimation::lockItem(bool state)
+{
+    this->demoItem()->locked = state;
+}
+
+DemoItem *DemoItemAnimation::demoItem()
+{
+    return (DemoItem *) this->item();
+}
+
+void DemoItemAnimation::setOpacityAt0(qreal opacity)
+{
+    this->opacityAt0 = opacity;
+}
+
+void DemoItemAnimation::setOpacityAt1(qreal opacity)
+{
+    this->opacityAt1 = opacity;
+}
+
+void DemoItemAnimation::setOpacity(qreal step)
+{
+    DemoItem *demoItem = (DemoItem *) item();
+    demoItem->opacity = this->opacityAt0 + step * step * step * (this->opacityAt1 - this->opacityAt0);
+}
+
+void DemoItemAnimation::afterAnimationStep(qreal step)
+{
+    if (step == 1.0f){
+        if (this->timeline->loopCount() > 0){
+            // animation finished.
+            if (this->hideOnFinished)
+                this->demoItem()->setRecursiveVisible(false);
+            this->demoItem()->animationStopped(this->inOrOut);
+        }
+    } else if (Colors::noAnimations && !this->forcePlay){
+        // The animation is not at end, but
+        // the animations should not play, so go to end.
+        this->setStep(1.0f); // will make this method being called recursive.
+    }
+}
+
+
+
+
+