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Diffstat (limited to 'src/qtquick1/util/qdeclarativesmoothedanimation.cpp')
| -rw-r--r-- | src/qtquick1/util/qdeclarativesmoothedanimation.cpp | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/src/qtquick1/util/qdeclarativesmoothedanimation.cpp b/src/qtquick1/util/qdeclarativesmoothedanimation.cpp deleted file mode 100644 index 451441ed14..0000000000 --- a/src/qtquick1/util/qdeclarativesmoothedanimation.cpp +++ /dev/null @@ -1,498 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** 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 "QtQuick1/private/qdeclarativesmoothedanimation_p.h" -#include "QtQuick1/private/qdeclarativesmoothedanimation_p_p.h" - -#include "QtQuick1/private/qdeclarativeanimation_p_p.h" - -#include <QtDeclarative/qdeclarativeproperty.h> -#include "QtDeclarative/private/qdeclarativeproperty_p.h" - -#include "QtDeclarative/private/qdeclarativeglobal_p.h" - -#include <QtCore/qdebug.h> - -#include <math.h> - -#define DELAY_STOP_TIMER_INTERVAL 32 - -QT_BEGIN_NAMESPACE - - - -QSmoothedAnimation_1::QSmoothedAnimation_1(QObject *parent) - : QAbstractAnimation(parent), to(0), velocity(200), userDuration(-1), maximumEasingTime(-1), - reversingMode(QDeclarative1SmoothedAnimation::Eased), initialVelocity(0), - trackVelocity(0), initialValue(0), invert(false), finalDuration(-1), lastTime(0) -{ - delayedStopTimer.setInterval(DELAY_STOP_TIMER_INTERVAL); - delayedStopTimer.setSingleShot(true); - connect(&delayedStopTimer, SIGNAL(timeout()), this, SLOT(stop())); -} - -void QSmoothedAnimation_1::restart() -{ - initialVelocity = trackVelocity; - if (state() != QAbstractAnimation::Running) - start(); - else - init(); -} - -void QSmoothedAnimation_1::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State /*oldState*/) -{ - if (newState == QAbstractAnimation::Running) - init(); -} - -void QSmoothedAnimation_1::delayedStop() -{ - if (!delayedStopTimer.isActive()) - delayedStopTimer.start(); -} - -int QSmoothedAnimation_1::duration() const -{ - return -1; -} - -bool QSmoothedAnimation_1::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.; - td = tf - met; - - qreal c1 = td; - qreal c2 = (tf - td) * vi - tf * velocity; - qreal c3 = -0.5 * (tf - td) * vi * vi; - - qreal vp1 = (-c2 + sqrt(c2 * c2 - 4 * c1 * c3)) / (2. * c1); - - vp = vp1; - a = vp / met; - d = a; - tp = (vp - vi) / a; - sp = vi * tp + 0.5 * a * tp * tp; - sd = sp + (td - tp) * vp; - } 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_1::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_1::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_1::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 QDeclarative1SmoothedAnimation::Eased: - initialVelocity = -trackVelocity; - break; - case QDeclarative1SmoothedAnimation::Sync: - QDeclarativePropertyPrivate::write(target, to, - QDeclarativePropertyPrivate::BypassInterceptor - | QDeclarativePropertyPrivate::DontRemoveBinding); - trackVelocity = 0; - stop(); - return; - case QDeclarative1SmoothedAnimation::Immediate: - initialVelocity = 0; - break; - } - } - - trackVelocity = initialVelocity; - - invert = (to < initialValue); - - if (!recalc()) { - QDeclarativePropertyPrivate::write(target, to, - QDeclarativePropertyPrivate::BypassInterceptor - | QDeclarativePropertyPrivate::DontRemoveBinding); - stop(); - return; - } -} - -/*! - \qmlclass SmoothedAnimation QDeclarative1SmoothedAnimation - \inqmlmodule QtQuick 1 - \ingroup qml-animation-transition - \since QtQuick 1.0 - \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/qtquick1/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} -*/ - -QDeclarative1SmoothedAnimation::QDeclarative1SmoothedAnimation(QObject *parent) -: QDeclarative1NumberAnimation(*(new QDeclarative1SmoothedAnimationPrivate), parent) -{ -} - -QDeclarative1SmoothedAnimation::~QDeclarative1SmoothedAnimation() -{ -} - -QDeclarative1SmoothedAnimationPrivate::QDeclarative1SmoothedAnimationPrivate() - : wrapperGroup(new QParallelAnimationGroup), anim(new QSmoothedAnimation_1) -{ - Q_Q(QDeclarative1SmoothedAnimation); - QDeclarative_setParent_noEvent(wrapperGroup, q); - QDeclarative_setParent_noEvent(anim, q); -} - -void QDeclarative1SmoothedAnimationPrivate::updateRunningAnimations() -{ - foreach(QSmoothedAnimation_1* ease, activeAnimations.values()){ - ease->maximumEasingTime = anim->maximumEasingTime; - ease->reversingMode = anim->reversingMode; - ease->velocity = anim->velocity; - ease->userDuration = anim->userDuration; - ease->init(); - } -} - -QAbstractAnimation* QDeclarative1SmoothedAnimation::qtAnimation() -{ - Q_D(QDeclarative1SmoothedAnimation); - return d->wrapperGroup; -} - -void QDeclarative1SmoothedAnimation::transition(QDeclarative1StateActions &actions, - QDeclarativeProperties &modified, - TransitionDirection direction) -{ - Q_D(QDeclarative1SmoothedAnimation); - QDeclarative1NumberAnimation::transition(actions, modified, direction); - - if (!d->actions) - return; - - QSet<QAbstractAnimation*> anims; - for (int i = 0; i < d->actions->size(); i++) { - QSmoothedAnimation_1 *ease; - bool needsRestart; - if (!d->activeAnimations.contains((*d->actions)[i].property)) { - ease = new QSmoothedAnimation_1(); - 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_1 *ease = static_cast<QSmoothedAnimation_1*>(d->wrapperGroup->animationAt(i)); - d->activeAnimations.remove(ease->target); - d->wrapperGroup->takeAnimation(i); - delete ease; - } - } -} - -/*! - \qmlproperty enumeration QtQuick1::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 -*/ -QDeclarative1SmoothedAnimation::ReversingMode QDeclarative1SmoothedAnimation::reversingMode() const -{ - Q_D(const QDeclarative1SmoothedAnimation); - return (QDeclarative1SmoothedAnimation::ReversingMode) d->anim->reversingMode; -} - -void QDeclarative1SmoothedAnimation::setReversingMode(ReversingMode m) -{ - Q_D(QDeclarative1SmoothedAnimation); - if (d->anim->reversingMode == m) - return; - - d->anim->reversingMode = m; - emit reversingModeChanged(); - d->updateRunningAnimations(); -} - -/*! - \qmlproperty int QtQuick1::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 QDeclarative1SmoothedAnimation::duration() const -{ - Q_D(const QDeclarative1SmoothedAnimation); - return d->anim->userDuration; -} - -void QDeclarative1SmoothedAnimation::setDuration(int duration) -{ - Q_D(QDeclarative1SmoothedAnimation); - if (duration != -1) - QDeclarative1NumberAnimation::setDuration(duration); - if(duration == d->anim->userDuration) - return; - d->anim->userDuration = duration; - d->updateRunningAnimations(); -} - -qreal QDeclarative1SmoothedAnimation::velocity() const -{ - Q_D(const QDeclarative1SmoothedAnimation); - return d->anim->velocity; -} - -/*! - \qmlproperty real QtQuick1::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 QDeclarative1SmoothedAnimation::setVelocity(qreal v) -{ - Q_D(QDeclarative1SmoothedAnimation); - if (d->anim->velocity == v) - return; - - d->anim->velocity = v; - emit velocityChanged(); - d->updateRunningAnimations(); -} - -/*! - \qmlproperty int QtQuick1::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 QDeclarative1SmoothedAnimation::maximumEasingTime() const -{ - Q_D(const QDeclarative1SmoothedAnimation); - return d->anim->maximumEasingTime; -} - -void QDeclarative1SmoothedAnimation::setMaximumEasingTime(int v) -{ - Q_D(QDeclarative1SmoothedAnimation); - if(v == d->anim->maximumEasingTime) - return; - d->anim->maximumEasingTime = v; - emit maximumEasingTimeChanged(); - d->updateRunningAnimations(); -} - - - -QT_END_NAMESPACE |