diff options
Diffstat (limited to 'src/declarative/util/qdeclarativesmoothedfollow.cpp')
| -rw-r--r-- | src/declarative/util/qdeclarativesmoothedfollow.cpp | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/src/declarative/util/qdeclarativesmoothedfollow.cpp b/src/declarative/util/qdeclarativesmoothedfollow.cpp deleted file mode 100644 index f70df9d..0000000 --- a/src/declarative/util/qdeclarativesmoothedfollow.cpp +++ /dev/null @@ -1,299 +0,0 @@ -/**************************************************************************** -** -** 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 "qdeclarativesmoothedfollow_p.h" -#include "qdeclarativesmoothedanimation_p_p.h" - -#include <private/qobject_p.h> -#include <QtCore/qnumeric.h> - -#include "qdeclarativeglobal_p.h" - - -QT_BEGIN_NAMESPACE - -class QDeclarativeSmoothedFollowPrivate : public QObjectPrivate -{ - Q_DECLARE_PUBLIC(QDeclarativeSmoothedFollow) -public: - QDeclarativeSmoothedFollowPrivate(); - - bool enabled; - QSmoothedAnimation *anim; -}; - -/*! - \qmlclass SmoothedFollow QDeclarativeSmoothedFollow - \since 4.7 - \inherits NumberAnimation - \brief The SmoothedFollow element allows a property to smoothly track a value. - - The SmoothedFollow animates a property's value to a set target value - using an ease in/out quad easing curve. If the animation is restarted - with a different target value, the easing curves used to animate to the old - and the new target values are smoothly spliced together to avoid any obvious - visual glitches by maintaining the current velocity. - - The property animation is configured by setting the velocity at which the - animation should occur, or the duration that the animation should take. - If both a velocity and a 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 follow example shows one rectangle tracking the position of another. -\code -import Qt 4.7 - -Rectangle { - width: 800; height: 600; color: "blue" - - Rectangle { - color: "green" - width: 60; height: 60; - SmoothedFollow on x { to: rect1.x - 5; velocity: 200 } - SmoothedFollow on y { to: rect1.y - 5; velocity: 200 } - } - - Rectangle { - id: rect1 - color: "red" - width: 50; height: 50; - } - - focus: true - Keys.onRightPressed: rect1.x = rect1.x + 100 - Keys.onLeftPressed: rect1.x = rect1.x - 100 - Keys.onUpPressed: rect1.y = rect1.y - 100 - Keys.onDownPressed: rect1.y = rect1.y + 100 -} -\endcode - - The default velocity of SmoothedFollow 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. - - \sa SpringFollow -*/ - -QDeclarativeSmoothedFollow::QDeclarativeSmoothedFollow(QObject *parent) - : QObject(*(new QDeclarativeSmoothedFollowPrivate), parent) -{ -} - -QDeclarativeSmoothedFollow::~QDeclarativeSmoothedFollow() -{ -} - -QDeclarativeSmoothedFollowPrivate::QDeclarativeSmoothedFollowPrivate() - : enabled(true), anim(new QSmoothedAnimation) -{ - Q_Q(QDeclarativeSmoothedFollow); - QDeclarative_setParent_noEvent(anim, q); -} - -/*! - \qmlproperty enumeration SmoothedFollow::reversingMode - - Sets how the SmoothedFollow behaves if an animation direction is reversed. - - If reversing mode is \c SmoothedFollow.Eased, the animation will smoothly decelerate, and - then reverse direction. If the reversing mode is \c SmoothedFollow.Immediate, the - animation will immediately begin accelerating in the reverse direction, - begining with a velocity of 0. If the reversing mode is \c SmoothedFollow.Sync, the - property is immediately set to the target value. -*/ -QDeclarativeSmoothedFollow::ReversingMode QDeclarativeSmoothedFollow::reversingMode() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return (ReversingMode) d->anim->reversingMode; -} - -void QDeclarativeSmoothedFollow::setReversingMode(ReversingMode m) -{ - Q_D(QDeclarativeSmoothedFollow); - if (d->anim->reversingMode == (QDeclarativeSmoothedAnimation::ReversingMode) m) - return; - - d->anim->reversingMode = (QDeclarativeSmoothedAnimation::ReversingMode) m; - emit reversingModeChanged(); -} - -/*! - \qmlproperty int SmoothedFollow::duration - - This property holds the animation duration, in msecs, used when tracking the source. - - Setting this to -1 (the default) disables the duration value. -*/ -int QDeclarativeSmoothedFollow::duration() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return d->anim->userDuration; -} - -void QDeclarativeSmoothedFollow::setDuration(int duration) -{ - Q_D(QDeclarativeSmoothedFollow); - if (duration == d->anim->duration()) - return; - - d->anim->userDuration = duration; - emit durationChanged(); -} - -qreal QDeclarativeSmoothedFollow::velocity() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return d->anim->velocity; -} - -/*! - \qmlproperty real SmoothedFollow::velocity - - This property holds the average velocity allowed when tracking the 'to' value. - - The default velocity of SmoothedFollow is 200 units/second. - - Setting this to -1 disables the velocity value. -*/ -void QDeclarativeSmoothedFollow::setVelocity(qreal v) -{ - Q_D(QDeclarativeSmoothedFollow); - if (d->anim->velocity == v) - return; - - d->anim->velocity = v; - emit velocityChanged(); -} - -/*! - \qmlproperty int SmoothedFollow::maximumEasingTime - - This property specifies the maximum time, in msecs, an "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 QDeclarativeSmoothedFollow::maximumEasingTime() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return d->anim->maximumEasingTime; -} - -void QDeclarativeSmoothedFollow::setMaximumEasingTime(int v) -{ - Q_D(QDeclarativeSmoothedFollow); - d->anim->maximumEasingTime = v; - emit maximumEasingTimeChanged(); -} - -/*! - \qmlproperty real SmoothedFollow::to - This property holds the ending value. - If not set, then the value defined in the end state of the transition or Behavior. -*/ -qreal QDeclarativeSmoothedFollow::to() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return d->anim->to; -} - -void QDeclarativeSmoothedFollow::setTo(qreal t) -{ - Q_D(QDeclarativeSmoothedFollow); - - if (qIsNaN(t)) - return; - - if (d->anim->to == t) - return; - - d->anim->to = t; - - if (d->enabled) - d->anim->restart(); -} - -/*! - \qmlproperty bool SmoothedFollow::enabled - This property whether this animation should automatically restart when - the 'to' property is upated. - - The default value of this property is 'true'. -*/ -bool QDeclarativeSmoothedFollow::enabled() const -{ - Q_D(const QDeclarativeSmoothedFollow); - return d->enabled; -} - -void QDeclarativeSmoothedFollow::setEnabled(bool e) -{ - Q_D(QDeclarativeSmoothedFollow); - if (d->enabled == e) - return; - d->enabled = e; - - if (d->enabled) - d->anim->restart(); - else - d->anim->stop(); - emit enabledChanged(); -} - -void QDeclarativeSmoothedFollow::setTarget(const QDeclarativeProperty &t) -{ - Q_D(QDeclarativeSmoothedFollow); - d->anim->target = t; -} - -QT_END_NAMESPACE |