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bound the grow animation between maximum and minimum sizes

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svn path=/trunk/KDE/kdelibs/; revision=1041374
This commit is contained in:
Marco Martin 2009-10-27 22:03:14 +00:00
parent 6808c61eca
commit d53654784a
1 changed files with 7 additions and 8 deletions
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15
animations/grow.cpp
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@ -45,19 +45,18 @@ QAbstractAnimation* GrowAnimation::render(QObject* parent){
//get current geometry values
QGraphicsWidget *m_object = widgetToAnimate();
QRectF geometry = m_object->geometry();
QSizeF minimum = m_object->effectiveSizeHint(Qt::MinimumSize);
QSizeF maximum = m_object->effectiveSizeHint(Qt::MaximumSize);
qreal w = geometry.width();
qreal h = geometry.height();
//compute new geometry values
qreal factor = m_animFactor;
qreal newWidth = w * factor;
qreal newHeight = h * factor;
//locfactor is factor by which object must move up and left
//to compensate for its growth down and right, to keep the
//center in place.
qreal locfactor = (factor - 1) / 2.0;
qreal newX = geometry.x() - w * locfactor;
qreal newY = geometry.y() - h * locfactor;
qreal newWidth = qBound(minimum.width(), w * factor, maximum.width());
qreal newHeight = qBound(minimum.width(), h * factor, maximum.width());
qreal newX = geometry.x() - (newWidth - w)/2;
qreal newY = geometry.y() - (newHeight - h)/2;
//Recreate only if needed
QPropertyAnimation *anim = dynamic_cast<QPropertyAnimation* >(animation());