plasma-framework/animations/pulser.cpp

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/* Copyright (C) 2009 Adenilson Cavalcanti <cavalcantii@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "widgetsnapshot_p.h"
#include "pulser_p.h"
#include <QEvent>
#include <QGraphicsWidget>
#include <QParallelAnimationGroup>
#include <QPropertyAnimation>
#include <QWeakPointer>
#include <kdebug.h>
namespace Plasma
{
PulseAnimation::PulseAnimation(QObject *parent)
: EasingAnimation(parent),
m_zvalue(0),
m_scale(0),
m_opacity(0),
m_endScale(1.5)
{
}
PulseAnimation::~PulseAnimation()
{
}
void PulseAnimation::setTargetScale(qreal scale)
{
m_endScale = scale;
}
qreal PulseAnimation::targetScale() const
{
return m_endScale;
}
void PulseAnimation::setCopy()
{
QGraphicsWidget *target = targetWidget();
if (!target) {
m_under.clear();
return;
}
if (!m_under.data()) {
m_under = new WidgetSnapShot;
}
m_under.data()->setTarget(target);
m_zvalue = target->zValue() - 1;
m_scale = target->scale();
m_under.data()->setOpacity(m_opacity);
m_under.data()->setScale(m_scale);
m_under.data()->setZValue(m_zvalue);
}
void PulseAnimation::resetPulser()
{
if (m_under.data()) {
m_under.data()->setOpacity(m_opacity);
m_under.data()->setScale(m_scale);
m_under.data()->setZValue(m_zvalue);
m_under.data()->hide();
}
}
void PulseAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
{
if (!targetWidget()) {
return;
}
if (oldState == Stopped && newState == Running) {
if (!m_under.data() || m_under.data()->target() != targetWidget() || m_under.data()->size() != targetWidget()->size()) {
setCopy();
}
if (m_under.data()->isIconBigger()) {
m_under.data()->setScale(0);
m_endScale = 1.0;
} else {
m_scale = 0;
m_endScale = 1.5;
}
if (m_under.data()->isVisible() == false) {
m_under.data()->setVisible(true);
}
m_under.data()->setOpacity(direction() == Forward ? 1 : 0);
m_under.data()->setScale(direction() == Forward ? m_scale : m_endScale);
} else if (newState == Stopped) {
resetPulser();
}
}
void PulseAnimation::updateEffectiveTime(int currentTime)
{
if (m_under.data()) {
qreal delta = currentTime / qreal(duration());
if (m_under.data()->isIconBigger()) {
m_under.data()->setScale(delta);
} else {
m_under.data()->setScale(delta);
delta = (1 - m_endScale) * delta;
m_under.data()->setScale(1 - delta);
}
delta = currentTime / qreal(duration());
if (direction() == Forward) {
m_under.data()->setOpacity(1.0 - delta);
} else if (direction() == Backward) {
m_under.data()->setOpacity(delta);
}
}
}
} //namespace Plasma
#include <../pulser_p.moc>