81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/*
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* Copyright 2009 Igor Trindade Oliveira <igor.oliveira@indt.org.br>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "zoom_p.h"
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#include <kdebug.h>
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namespace Plasma
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{
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ZoomAnimation::ZoomAnimation(QObject *parent)
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: Animation(parent),
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m_zoom(0)
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{
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}
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ZoomAnimation::~ZoomAnimation()
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{
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}
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void ZoomAnimation::setZoom(qreal zoom)
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{
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m_zoom = zoom;
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}
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qreal ZoomAnimation::zoom() const
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{
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return m_zoom;
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}
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void ZoomAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
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{
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QGraphicsWidget *w = targetWidget();
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if (!w) {
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return;
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}
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if (oldState == Stopped && newState == Running) {
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w->setTransformOriginPoint(w->size().width()/2, w->size().height()/2);
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w->setScale(direction() == Forward ? 1 : m_zoom);
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} else if (newState == Stopped) {
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w->setScale(direction() == Forward ? m_zoom : 1);
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}
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}
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void ZoomAnimation::updateCurrentTime(int currentTime)
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{
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QGraphicsWidget *w = targetWidget();
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if (w) {
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qreal delta = Animation::easingCurve().valueForProgress(
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currentTime / qreal(duration()));
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if (m_zoom != 1) {
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delta = (1 - m_zoom) * delta;
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w->setScale(1 - delta);
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} else {
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w->setScale(delta);
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}
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}
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Animation::updateCurrentTime(currentTime);
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}
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} //namespace Plasma
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