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Diffstat (limited to 'src/gui/graphicsview/qgraphicsitemanimation.cpp')
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diff --git a/src/gui/graphicsview/qgraphicsitemanimation.cpp b/src/gui/graphicsview/qgraphicsitemanimation.cpp deleted file mode 100644 index 7eedc8dd3d..0000000000 --- a/src/gui/graphicsview/qgraphicsitemanimation.cpp +++ /dev/null @@ -1,599 +0,0 @@ -/**************************************************************************** -** -** 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 QtGui 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. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \class QGraphicsItemAnimation - \brief The QGraphicsItemAnimation class provides simple animation - support for QGraphicsItem. - \since 4.2 - \ingroup graphicsview-api - \deprecated - - The QGraphicsItemAnimation class animates a QGraphicsItem. You can - schedule changes to the item's transformation matrix at - specified steps. The QGraphicsItemAnimation class has a - current step value. When this value changes the transformations - scheduled at that step are performed. The current step of the - animation is set with the \c setStep() function. - - QGraphicsItemAnimation will do a simple linear interpolation - between the nearest adjacent scheduled changes to calculate the - matrix. For instance, if you set the position of an item at values - 0.0 and 1.0, the animation will show the item moving in a straight - line between these positions. The same is true for scaling and - rotation. - - It is usual to use the class with a QTimeLine. The timeline's - \l{QTimeLine::}{valueChanged()} signal is then connected to the - \c setStep() slot. For example, you can set up an item for rotation - by calling \c setRotationAt() for different step values. - The animations timeline is set with the setTimeLine() function. - - An example animation with a timeline follows: - - \snippet doc/src/snippets/timeline/main.cpp 0 - - Note that steps lie between 0.0 and 1.0. It may be necessary to use - \l{QTimeLine::}{setUpdateInterval()}. The default update interval - is 40 ms. A scheduled transformation cannot be removed when set, - so scheduling several transformations of the same kind (e.g., - rotations) at the same step is not recommended. - - \sa QTimeLine, {Graphics View Framework} -*/ - -#include "qgraphicsitemanimation.h" - -#ifndef QT_NO_GRAPHICSVIEW - -#include "qgraphicsitem.h" - -#include <QtCore/qtimeline.h> -#include <QtCore/qpoint.h> -#include <QtCore/qpointer.h> -#include <QtCore/qpair.h> -#include <QtGui/qmatrix.h> - -QT_BEGIN_NAMESPACE - -class QGraphicsItemAnimationPrivate -{ -public: - inline QGraphicsItemAnimationPrivate() - : q(0), timeLine(0), item(0), step(0) - { } - - QGraphicsItemAnimation *q; - - QPointer<QTimeLine> timeLine; - QGraphicsItem *item; - - QPointF startPos; - QMatrix startMatrix; - - qreal step; - - struct Pair { - Pair(qreal a, qreal b) : step(a), value(b) {} - bool operator <(const Pair &other) const - { return step < other.step; } - bool operator==(const Pair &other) const - { return step == other.step; } - qreal step; - qreal value; - }; - QList<Pair> xPosition; - QList<Pair> yPosition; - QList<Pair> rotation; - QList<Pair> verticalScale; - QList<Pair> horizontalScale; - QList<Pair> verticalShear; - QList<Pair> horizontalShear; - QList<Pair> xTranslation; - QList<Pair> yTranslation; - - qreal linearValueForStep(qreal step, QList<Pair> *source, qreal defaultValue = 0); - void insertUniquePair(qreal step, qreal value, QList<Pair> *binList, const char* method); -}; - -qreal QGraphicsItemAnimationPrivate::linearValueForStep(qreal step, QList<Pair> *source, qreal defaultValue) -{ - if (source->isEmpty()) - return defaultValue; - step = qMin<qreal>(qMax<qreal>(step, 0), 1); - - if (step == 1) - return source->last().value; - - qreal stepBefore = 0; - qreal stepAfter = 1; - qreal valueBefore = source->first().step == 0 ? source->first().value : defaultValue; - qreal valueAfter = source->last().value; - - // Find the closest step and value before the given step. - for (int i = 0; i < source->size() && step >= source->at(i).step; ++i) { - stepBefore = source->at(i).step; - valueBefore = source->at(i).value; - } - - // Find the closest step and value after the given step. - for (int j = source->size() - 1; j >= 0 && step < source->at(j).step; --j) { - stepAfter = source->at(j).step; - valueAfter = source->at(j).value; - } - - // Do a simple linear interpolation. - return valueBefore + (valueAfter - valueBefore) * ((step - stepBefore) / (stepAfter - stepBefore)); -} - -void QGraphicsItemAnimationPrivate::insertUniquePair(qreal step, qreal value, QList<Pair> *binList, const char* method) -{ - if (step < 0.0 || step > 1.0) { - qWarning("QGraphicsItemAnimation::%s: invalid step = %f", method, step); - return; - } - - Pair pair(step, value); - - QList<Pair>::iterator result = qBinaryFind(binList->begin(), binList->end(), pair); - if (result != binList->end()) - result->value = value; - else { - *binList << pair; - qSort(binList->begin(), binList->end()); - } -} - -/*! - Constructs an animation object with the given \a parent. -*/ -QGraphicsItemAnimation::QGraphicsItemAnimation(QObject *parent) - : QObject(parent), d(new QGraphicsItemAnimationPrivate) -{ - d->q = this; -} - -/*! - Destroys the animation object. -*/ -QGraphicsItemAnimation::~QGraphicsItemAnimation() -{ - delete d; -} - -/*! - Returns the item on which the animation object operates. - - \sa setItem() -*/ -QGraphicsItem *QGraphicsItemAnimation::item() const -{ - return d->item; -} - -/*! - Sets the specified \a item to be used in the animation. - - \sa item() -*/ -void QGraphicsItemAnimation::setItem(QGraphicsItem *item) -{ - d->item = item; - d->startPos = d->item->pos(); -} - -/*! - Returns the timeline object used to control the rate at which the animation - occurs. - - \sa setTimeLine() -*/ -QTimeLine *QGraphicsItemAnimation::timeLine() const -{ - return d->timeLine; -} - -/*! - Sets the timeline object used to control the rate of animation to the \a timeLine - specified. - - \sa timeLine() -*/ -void QGraphicsItemAnimation::setTimeLine(QTimeLine *timeLine) -{ - if (d->timeLine == timeLine) - return; - if (d->timeLine) - delete d->timeLine; - if (!timeLine) - return; - d->timeLine = timeLine; - connect(timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(setStep(qreal))); -} - -/*! - Returns the position of the item at the given \a step value. - - \sa setPosAt() -*/ -QPointF QGraphicsItemAnimation::posAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::posAt: invalid step = %f", step); - - return QPointF(d->linearValueForStep(step, &d->xPosition, d->startPos.x()), - d->linearValueForStep(step, &d->yPosition, d->startPos.y())); -} - -/*! - \fn void QGraphicsItemAnimation::setPosAt(qreal step, const QPointF &point) - - Sets the position of the item at the given \a step value to the \a point specified. - - \sa posAt() -*/ -void QGraphicsItemAnimation::setPosAt(qreal step, const QPointF &pos) -{ - d->insertUniquePair(step, pos.x(), &d->xPosition, "setPosAt"); - d->insertUniquePair(step, pos.y(), &d->yPosition, "setPosAt"); -} - -/*! - Returns all explicitly inserted positions. - - \sa posAt(), setPosAt() -*/ -QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::posList() const -{ - QList<QPair<qreal, QPointF> > list; - for (int i = 0; i < d->xPosition.size(); ++i) - list << QPair<qreal, QPointF>(d->xPosition.at(i).step, QPointF(d->xPosition.at(i).value, d->yPosition.at(i).value)); - - return list; -} - -/*! - Returns the matrix used to transform the item at the specified \a step value. -*/ -QMatrix QGraphicsItemAnimation::matrixAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::matrixAt: invalid step = %f", step); - - QMatrix matrix; - if (!d->rotation.isEmpty()) - matrix.rotate(rotationAt(step)); - if (!d->verticalScale.isEmpty()) - matrix.scale(horizontalScaleAt(step), verticalScaleAt(step)); - if (!d->verticalShear.isEmpty()) - matrix.shear(horizontalShearAt(step), verticalShearAt(step)); - if (!d->xTranslation.isEmpty()) - matrix.translate(xTranslationAt(step), yTranslationAt(step)); - return matrix; -} - -/*! - Returns the angle at which the item is rotated at the specified \a step value. - - \sa setRotationAt() -*/ -qreal QGraphicsItemAnimation::rotationAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::rotationAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->rotation); -} - -/*! - Sets the rotation of the item at the given \a step value to the \a angle specified. - - \sa rotationAt() -*/ -void QGraphicsItemAnimation::setRotationAt(qreal step, qreal angle) -{ - d->insertUniquePair(step, angle, &d->rotation, "setRotationAt"); -} - -/*! - Returns all explicitly inserted rotations. - - \sa rotationAt(), setRotationAt() -*/ -QList<QPair<qreal, qreal> > QGraphicsItemAnimation::rotationList() const -{ - QList<QPair<qreal, qreal> > list; - for (int i = 0; i < d->rotation.size(); ++i) - list << QPair<qreal, qreal>(d->rotation.at(i).step, d->rotation.at(i).value); - - return list; -} - -/*! - Returns the horizontal translation of the item at the specified \a step value. - - \sa setTranslationAt() -*/ -qreal QGraphicsItemAnimation::xTranslationAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::xTranslationAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->xTranslation); -} - -/*! - Returns the vertical translation of the item at the specified \a step value. - - \sa setTranslationAt() -*/ -qreal QGraphicsItemAnimation::yTranslationAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::yTranslationAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->yTranslation); -} - -/*! - Sets the translation of the item at the given \a step value using the horizontal - and vertical coordinates specified by \a dx and \a dy. - - \sa xTranslationAt(), yTranslationAt() -*/ -void QGraphicsItemAnimation::setTranslationAt(qreal step, qreal dx, qreal dy) -{ - d->insertUniquePair(step, dx, &d->xTranslation, "setTranslationAt"); - d->insertUniquePair(step, dy, &d->yTranslation, "setTranslationAt"); -} - -/*! - Returns all explicitly inserted translations. - - \sa xTranslationAt(), yTranslationAt(), setTranslationAt() -*/ -QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::translationList() const -{ - QList<QPair<qreal, QPointF> > list; - for (int i = 0; i < d->xTranslation.size(); ++i) - list << QPair<qreal, QPointF>(d->xTranslation.at(i).step, QPointF(d->xTranslation.at(i).value, d->yTranslation.at(i).value)); - - return list; -} - -/*! - Returns the vertical scale for the item at the specified \a step value. - - \sa setScaleAt() -*/ -qreal QGraphicsItemAnimation::verticalScaleAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::verticalScaleAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->verticalScale, 1); -} - -/*! - Returns the horizontal scale for the item at the specified \a step value. - - \sa setScaleAt() -*/ -qreal QGraphicsItemAnimation::horizontalScaleAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::horizontalScaleAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->horizontalScale, 1); -} - -/*! - Sets the scale of the item at the given \a step value using the horizontal and - vertical scale factors specified by \a sx and \a sy. - - \sa verticalScaleAt(), horizontalScaleAt() -*/ -void QGraphicsItemAnimation::setScaleAt(qreal step, qreal sx, qreal sy) -{ - d->insertUniquePair(step, sx, &d->horizontalScale, "setScaleAt"); - d->insertUniquePair(step, sy, &d->verticalScale, "setScaleAt"); -} - -/*! - Returns all explicitly inserted scales. - - \sa verticalScaleAt(), horizontalScaleAt(), setScaleAt() -*/ -QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::scaleList() const -{ - QList<QPair<qreal, QPointF> > list; - for (int i = 0; i < d->horizontalScale.size(); ++i) - list << QPair<qreal, QPointF>(d->horizontalScale.at(i).step, QPointF(d->horizontalScale.at(i).value, d->verticalScale.at(i).value)); - - return list; -} - -/*! - Returns the vertical shear for the item at the specified \a step value. - - \sa setShearAt() -*/ -qreal QGraphicsItemAnimation::verticalShearAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::verticalShearAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->verticalShear, 0); -} - -/*! - Returns the horizontal shear for the item at the specified \a step value. - - \sa setShearAt() -*/ -qreal QGraphicsItemAnimation::horizontalShearAt(qreal step) const -{ - if (step < 0.0 || step > 1.0) - qWarning("QGraphicsItemAnimation::horizontalShearAt: invalid step = %f", step); - - return d->linearValueForStep(step, &d->horizontalShear, 0); -} - -/*! - Sets the shear of the item at the given \a step value using the horizontal and - vertical shear factors specified by \a sh and \a sv. - - \sa verticalShearAt(), horizontalShearAt() -*/ -void QGraphicsItemAnimation::setShearAt(qreal step, qreal sh, qreal sv) -{ - d->insertUniquePair(step, sh, &d->horizontalShear, "setShearAt"); - d->insertUniquePair(step, sv, &d->verticalShear, "setShearAt"); -} - -/*! - Returns all explicitly inserted shears. - - \sa verticalShearAt(), horizontalShearAt(), setShearAt() -*/ -QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::shearList() const -{ - QList<QPair<qreal, QPointF> > list; - for (int i = 0; i < d->horizontalShear.size(); ++i) - list << QPair<qreal, QPointF>(d->horizontalShear.at(i).step, QPointF(d->horizontalShear.at(i).value, d->verticalShear.at(i).value)); - - return list; -} - -/*! - Clears the scheduled transformations used for the animation, but - retains the item and timeline. -*/ -void QGraphicsItemAnimation::clear() -{ - d->xPosition.clear(); - d->yPosition.clear(); - d->rotation.clear(); - d->verticalScale.clear(); - d->horizontalScale.clear(); - d->verticalShear.clear(); - d->horizontalShear.clear(); - d->xTranslation.clear(); - d->yTranslation.clear(); -} - -/*! - \fn void QGraphicsItemAnimation::setStep(qreal step) - - Sets the current \a step value for the animation, causing the - transformations scheduled at this step to be performed. -*/ -void QGraphicsItemAnimation::setStep(qreal x) -{ - if (x < 0.0 || x > 1.0) { - qWarning("QGraphicsItemAnimation::setStep: invalid step = %f", x); - return; - } - - beforeAnimationStep(x); - - d->step = x; - if (d->item) { - if (!d->xPosition.isEmpty() || !d->yPosition.isEmpty()) - d->item->setPos(posAt(x)); - if (!d->rotation.isEmpty() - || !d->verticalScale.isEmpty() - || !d->horizontalScale.isEmpty() - || !d->verticalShear.isEmpty() - || !d->horizontalShear.isEmpty() - || !d->xTranslation.isEmpty() - || !d->yTranslation.isEmpty()) { - d->item->setMatrix(d->startMatrix * matrixAt(x)); - } - } - - afterAnimationStep(x); -} - -/*! - Resets the item to its starting position and transformation. - - \obsolete - - You can call setStep(0) instead. -*/ -void QGraphicsItemAnimation::reset() -{ - if (!d->item) - return; - d->startPos = d->item->pos(); - d->startMatrix = d->item->matrix(); -} - -/*! - \fn void QGraphicsItemAnimation::beforeAnimationStep(qreal step) - - This method is meant to be overridden by subclassed that needs to - execute additional code before a new step takes place. The - animation \a step is provided for use in cases where the action - depends on its value. -*/ -void QGraphicsItemAnimation::beforeAnimationStep(qreal step) -{ - Q_UNUSED(step); -} - -/*! - \fn void QGraphicsItemAnimation::afterAnimationStep(qreal step) - - This method is meant to be overridden in subclasses that need to - execute additional code after a new step has taken place. The - animation \a step is provided for use in cases where the action - depends on its value. -*/ -void QGraphicsItemAnimation::afterAnimationStep(qreal step) -{ - Q_UNUSED(step); -} - -QT_END_NAMESPACE - -#endif // QT_NO_GRAPHICSVIEW |