Say hello to QtQuick module

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

1 files changed, 503 insertions, 0 deletions

diff --git a/src/quick/util/qdeclarativesmoothedanimation.cpp b/src/quick/util/qdeclarativesmoothedanimation.cpp
new file mode 100644
index 0000000000..45c6885fbb
--- /dev/null
+++ b/src/quick/util/qdeclarativesmoothedanimation.cpp
@@ -0,0 +1,503 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeclarativesmoothedanimation_p.h"
+#include "qdeclarativesmoothedanimation_p_p.h"
+
+#include "qdeclarativeanimation_p_p.h"
+
+#include <qdeclarativeproperty.h>
+#include <private/qdeclarativeproperty_p.h>
+
+#include <private/qdeclarativeglobal_p.h>
+
+#include <QtCore/qdebug.h>
+
+#include <math.h>
+
+#define DELAY_STOP_TIMER_INTERVAL 32
+
+QT_BEGIN_NAMESPACE
+
+QSmoothedAnimation::QSmoothedAnimation(QObject *parent)
+    : QAbstractAnimation(parent), to(0), velocity(200), userDuration(-1), maximumEasingTime(-1),
+      reversingMode(QDeclarativeSmoothedAnimation::Eased), initialVelocity(0),
+      trackVelocity(0), initialValue(0), invert(false), finalDuration(-1), lastTime(0)
+{
+}
+
+void QSmoothedAnimation::restart()
+{
+    initialVelocity = trackVelocity;
+    if (state() != QAbstractAnimation::Running)
+        start();
+    else
+        init();
+}
+
+void QSmoothedAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State /*oldState*/)
+{
+    if (newState == QAbstractAnimation::Running)
+        init();
+}
+
+void QSmoothedAnimation::timerEvent(QTimerEvent *event)
+{
+    if (event->timerId() == delayedStopTimer.timerId()) {
+        delayedStopTimer.stop();
+        stop();
+    } else {
+        QAbstractAnimation::timerEvent(event);
+    }
+}
+
+void QSmoothedAnimation::delayedStop()
+{
+    if (!delayedStopTimer.isActive())
+        delayedStopTimer.start(DELAY_STOP_TIMER_INTERVAL, this);
+}
+
+int QSmoothedAnimation::duration() const
+{
+    return -1;
+}
+
+bool QSmoothedAnimation::recalc()
+{
+    s = to - initialValue;
+    vi = initialVelocity;
+
+    s = (invert? -1.0: 1.0) * s;
+
+    if (userDuration > 0 && velocity > 0) {
+        tf = s / velocity;
+        if (tf > (userDuration / 1000.)) tf = (userDuration / 1000.);
+    } else if (userDuration > 0) {
+        tf = userDuration / 1000.;
+    } else if (velocity > 0) {
+        tf = s / velocity;
+    } else {
+        return false;
+    }
+
+    finalDuration = ceil(tf * 1000.0);
+
+    if (maximumEasingTime == 0) {
+        a = 0;
+        d = 0;
+        tp = 0;
+        td = tf;
+        vp = velocity;
+        sp = 0;
+        sd = s;
+    } else if (maximumEasingTime != -1 && tf > (maximumEasingTime / 1000.)) {
+        qreal met = maximumEasingTime / 1000.;
+        /*       tp|       |td
+         * vp_      _______
+         *         /       \
+         * vi_    /         \
+         *                   \
+         *                    \   _ 0
+         *       |ta|      |ta|
+         */
+        qreal ta = met / 2.;
+        a = (s - (vi * tf - 0.5 * vi * ta)) / (tf * ta - ta * ta);
+
+        vp = vi + a * ta;
+        d = vp / ta;
+        tp = ta;
+        sp = vi * ta + 0.5 * a * tp * tp;
+        sd = sp + vp * (tf - 2 * ta);
+        td = tf - ta;
+    } else {
+        qreal c1 = 0.25 * tf * tf;
+        qreal c2 = 0.5 * vi * tf - s;
+        qreal c3 = -0.25 * vi * vi;
+
+        qreal a1 = (-c2 + sqrt(c2 * c2 - 4 * c1 * c3)) / (2. * c1);
+
+        qreal tp1 = 0.5 * tf - 0.5 * vi / a1;
+        qreal vp1 = a1 * tp1 + vi;
+
+        qreal sp1 = 0.5 * a1 * tp1 * tp1 + vi * tp1;
+
+        a = a1;
+        d = a1;
+        tp = tp1;
+        td = tp1;
+        vp = vp1;
+        sp = sp1;
+        sd = sp1;
+    }
+    return true;
+}
+
+qreal QSmoothedAnimation::easeFollow(qreal time_seconds)
+{
+    qreal value;
+    if (time_seconds < tp) {
+        trackVelocity = vi + time_seconds * a;
+        value = 0.5 * a * time_seconds * time_seconds + vi * time_seconds;
+    } else if (time_seconds < td) {
+        time_seconds -= tp;
+        trackVelocity = vp;
+        value = sp + time_seconds * vp;
+    } else if (time_seconds < tf) {
+        time_seconds -= td;
+        trackVelocity = vp - time_seconds * a;
+        value = sd - 0.5 * d * time_seconds * time_seconds + vp * time_seconds;
+    } else {
+        trackVelocity = 0;
+        value = s;
+        delayedStop();
+    }
+
+    // to normalize 's' between [0..1], divide 'value' by 's'
+    return value;
+}
+
+void QSmoothedAnimation::updateCurrentTime(int t)
+{
+    qreal time_seconds = qreal(t - lastTime) / 1000.;
+
+    qreal value = easeFollow(time_seconds);
+    value *= (invert? -1.0: 1.0);
+    QDeclarativePropertyPrivate::write(target, initialValue + value,
+                                       QDeclarativePropertyPrivate::BypassInterceptor
+                                       | QDeclarativePropertyPrivate::DontRemoveBinding);
+}
+
+void QSmoothedAnimation::init()
+{
+    if (velocity == 0) {
+        stop();
+        return;
+    }
+
+    if (delayedStopTimer.isActive())
+        delayedStopTimer.stop();
+
+    initialValue = target.read().toReal();
+    lastTime = this->currentTime();
+
+    if (to == initialValue) {
+        stop();
+        return;
+    }
+
+    bool hasReversed = trackVelocity != 0. &&
+                      ((!invert) == ((initialValue - to) > 0));
+
+    if (hasReversed) {
+        switch (reversingMode) {
+            default:
+            case QDeclarativeSmoothedAnimation::Eased:
+                initialVelocity = -trackVelocity;
+                break;
+            case QDeclarativeSmoothedAnimation::Sync:
+                QDeclarativePropertyPrivate::write(target, to,
+                                                   QDeclarativePropertyPrivate::BypassInterceptor
+                                                   | QDeclarativePropertyPrivate::DontRemoveBinding);
+                trackVelocity = 0;
+                stop();
+                return;
+            case QDeclarativeSmoothedAnimation::Immediate:
+                initialVelocity = 0;
+                break;
+        }
+    }
+
+    trackVelocity = initialVelocity;
+
+    invert = (to < initialValue);
+
+    if (!recalc()) {
+        QDeclarativePropertyPrivate::write(target, to,
+                                           QDeclarativePropertyPrivate::BypassInterceptor
+                                           | QDeclarativePropertyPrivate::DontRemoveBinding);
+        stop();
+        return;
+    }
+}
+
+/*!
+    \qmlclass SmoothedAnimation QDeclarativeSmoothedAnimation
+    \inqmlmodule QtQuick 2
+    \ingroup qml-animation-transition
+    \inherits NumberAnimation
+    \brief The SmoothedAnimation element allows a property to smoothly track a value.
+
+    A SmoothedAnimation animates a property's value to a set target value
+    using an ease in/out quad easing curve.  When the target value changes,
+    the easing curves used to animate between the old and new target values
+    are smoothly spliced together to create a smooth movement to the new
+    target value that maintains the current velocity.
+
+    The follow example shows one \l Rectangle tracking the position of another
+    using SmoothedAnimation. The green rectangle's \c x and \c y values are
+    bound to those of the red rectangle. Whenever these values change, the
+    green rectangle smoothly animates to its new position:
+
+    \snippet doc/src/snippets/declarative/smoothedanimation.qml 0
+
+    A SmoothedAnimation can be configured by setting the \l velocity at which the
+    animation should occur, or the \l duration that the animation should take.
+    If both the \l velocity and \l duration are specified, the one that results in
+    the quickest animation is chosen for each change in the target value.
+
+    For example, animating from 0 to 800 will take 4 seconds if a velocity
+    of 200 is set, will take 8 seconds with a duration of 8000 set, and will
+    take 4 seconds with both a velocity of 200 and a duration of 8000 set.
+    Animating from 0 to 20000 will take 10 seconds if a velocity of 200 is set,
+    will take 8 seconds with a duration of 8000 set, and will take 8 seconds
+    with both a velocity of 200 and a duration of 8000 set.
+
+    The default velocity of SmoothedAnimation is 200 units/second.  Note that if the range of the
+    value being animated is small, then the velocity will need to be adjusted
+    appropriately.  For example, the opacity of an item ranges from 0 - 1.0.
+    To enable a smooth animation in this range the velocity will need to be
+    set to a value such as 0.5 units/second.  Animating from 0 to 1.0 with a velocity
+    of 0.5 will take 2000 ms to complete.
+
+    Like any other animation element, a SmoothedAnimation can be applied in a
+    number of ways, including transitions, behaviors and property value
+    sources. The \l {QML Animation and Transitions} documentation shows a
+    variety of methods for creating animations.
+
+    \sa SpringAnimation, NumberAnimation, {QML Animation and Transitions}, {declarative/animation/basics}{Animation basics example}
+*/
+
+QDeclarativeSmoothedAnimation::QDeclarativeSmoothedAnimation(QObject *parent)
+: QDeclarativeNumberAnimation(*(new QDeclarativeSmoothedAnimationPrivate), parent)
+{
+}
+
+QDeclarativeSmoothedAnimation::~QDeclarativeSmoothedAnimation()
+{
+}
+
+QDeclarativeSmoothedAnimationPrivate::QDeclarativeSmoothedAnimationPrivate()
+    : wrapperGroup(new QParallelAnimationGroup), anim(new QSmoothedAnimation)
+{
+    Q_Q(QDeclarativeSmoothedAnimation);
+    QDeclarative_setParent_noEvent(wrapperGroup, q);
+    QDeclarative_setParent_noEvent(anim, q);
+}
+
+void QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations()
+{
+    foreach(QSmoothedAnimation* ease, activeAnimations.values()){
+        ease->maximumEasingTime = anim->maximumEasingTime;
+        ease->reversingMode = anim->reversingMode;
+        ease->velocity = anim->velocity;
+        ease->userDuration = anim->userDuration;
+        ease->init();
+    }
+}
+
+QAbstractAnimation* QDeclarativeSmoothedAnimation::qtAnimation()
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    return d->wrapperGroup;
+}
+
+void QDeclarativeSmoothedAnimation::transition(QDeclarativeStateActions &actions,
+                                               QDeclarativeProperties &modified,
+                                               TransitionDirection direction)
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    QDeclarativeNumberAnimation::transition(actions, modified, direction);
+
+    if (!d->actions)
+        return;
+
+    QSet<QAbstractAnimation*> anims;
+    for (int i = 0; i < d->actions->size(); i++) {
+        QSmoothedAnimation *ease;
+        bool needsRestart;
+        if (!d->activeAnimations.contains((*d->actions)[i].property)) {
+            ease = new QSmoothedAnimation();
+            d->wrapperGroup->addAnimation(ease);
+            d->activeAnimations.insert((*d->actions)[i].property, ease);
+            needsRestart = false;
+        } else {
+            ease = d->activeAnimations.value((*d->actions)[i].property);
+            needsRestart = true;
+        }
+        ease->target = (*d->actions)[i].property;
+        ease->to = (*d->actions)[i].toValue.toReal();
+
+        // copying public members from main value holder animation
+        ease->maximumEasingTime = d->anim->maximumEasingTime;
+        ease->reversingMode = d->anim->reversingMode;
+        ease->velocity = d->anim->velocity;
+        ease->userDuration = d->anim->userDuration;
+
+        ease->initialVelocity = ease->trackVelocity;
+
+        if (needsRestart)
+            ease->init();
+        anims.insert(ease);
+    }
+
+    for (int i = d->wrapperGroup->animationCount() - 1; i >= 0 ; --i) {
+        if (!anims.contains(d->wrapperGroup->animationAt(i))) {
+            QSmoothedAnimation *ease = static_cast<QSmoothedAnimation*>(d->wrapperGroup->animationAt(i));
+            d->activeAnimations.remove(ease->target);
+            d->wrapperGroup->takeAnimation(i);
+            delete ease;
+        }
+    }
+}
+
+/*!
+    \qmlproperty enumeration QtQuick2::SmoothedAnimation::reversingMode
+
+    Sets how the SmoothedAnimation behaves if an animation direction is reversed.
+
+    Possible values are:
+
+    \list
+    \o SmoothedAnimation.Eased (default) - the animation will smoothly decelerate, and then reverse direction
+    \o SmoothedAnimation.Immediate - the animation will immediately begin accelerating in the reverse direction, beginning with a velocity of 0
+    \o SmoothedAnimation.Sync - the property is immediately set to the target value
+    \endlist
+*/
+QDeclarativeSmoothedAnimation::ReversingMode QDeclarativeSmoothedAnimation::reversingMode() const
+{
+    Q_D(const QDeclarativeSmoothedAnimation);
+    return (QDeclarativeSmoothedAnimation::ReversingMode) d->anim->reversingMode;
+}
+
+void QDeclarativeSmoothedAnimation::setReversingMode(ReversingMode m)
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    if (d->anim->reversingMode == m)
+        return;
+
+    d->anim->reversingMode = m;
+    emit reversingModeChanged();
+    d->updateRunningAnimations();
+}
+
+/*!
+    \qmlproperty int QtQuick2::SmoothedAnimation::duration
+
+    This property holds the animation duration, in msecs, used when tracking the source.
+
+    Setting this to -1 (the default) disables the duration value.
+
+    If the velocity value and the duration value are both enabled, then the animation will
+    use whichever gives the shorter duration.
+*/
+int QDeclarativeSmoothedAnimation::duration() const
+{
+    Q_D(const QDeclarativeSmoothedAnimation);
+    return d->anim->userDuration;
+}
+
+void QDeclarativeSmoothedAnimation::setDuration(int duration)
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    if (duration != -1)
+        QDeclarativeNumberAnimation::setDuration(duration);
+    if(duration == d->anim->userDuration)
+        return;
+    d->anim->userDuration = duration;
+    d->updateRunningAnimations();
+}
+
+qreal QDeclarativeSmoothedAnimation::velocity() const
+{
+    Q_D(const QDeclarativeSmoothedAnimation);
+    return d->anim->velocity;
+}
+
+/*!
+    \qmlproperty real QtQuick2::SmoothedAnimation::velocity
+
+    This property holds the average velocity allowed when tracking the 'to' value.
+
+    The default velocity of SmoothedAnimation is 200 units/second.
+
+    Setting this to -1 disables the velocity value.
+
+    If the velocity value and the duration value are both enabled, then the animation will
+    use whichever gives the shorter duration.
+*/
+void QDeclarativeSmoothedAnimation::setVelocity(qreal v)
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    if (d->anim->velocity == v)
+        return;
+
+    d->anim->velocity = v;
+    emit velocityChanged();
+    d->updateRunningAnimations();
+}
+
+/*!
+    \qmlproperty int QtQuick2::SmoothedAnimation::maximumEasingTime
+
+    This property specifies the maximum time, in msecs, any "eases" during the follow should take.
+    Setting this property causes the velocity to "level out" after at a time.  Setting
+    a negative value reverts to the normal mode of easing over the entire animation
+    duration.
+
+    The default value is -1.
+*/
+int QDeclarativeSmoothedAnimation::maximumEasingTime() const
+{
+    Q_D(const QDeclarativeSmoothedAnimation);
+    return d->anim->maximumEasingTime;
+}
+
+void QDeclarativeSmoothedAnimation::setMaximumEasingTime(int v)
+{
+    Q_D(QDeclarativeSmoothedAnimation);
+    if(v == d->anim->maximumEasingTime)
+        return;
+    d->anim->maximumEasingTime = v;
+    emit maximumEasingTimeChanged();
+    d->updateRunningAnimations();
+}
+
+QT_END_NAMESPACE