plasma-framework/animations/pulser.cpp
Adenilson Cavalcanti Da Silva ca35755ac0 Following the same function convention call in the remaining classes.
TODO: check which classes it makes sense to actually allow the user
to set the easing curve.


svn path=/trunk/KDE/kdelibs/; revision=1060689
2009-12-09 16:34:43 +00:00

120 lines
3.0 KiB
C++

/* 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 "pulser_p.h"
#include "plasma/private/pulsershadow_p.h"
#include <QEvent>
#include <QGraphicsWidget>
#include <QParallelAnimationGroup>
#include <QPropertyAnimation>
#include <kdebug.h>
namespace Plasma
{
PulseAnimation::PulseAnimation(QObject *parent)
: Animation(parent),
zvalue(0), scale(0), mopacity(0), endScale(1.5),
under(0)
{
}
PulseAnimation::~PulseAnimation()
{
}
void PulseAnimation::setWidgetToAnimate(QGraphicsWidget *widget)
{
if (widget == widgetToAnimate()) {
return;
}
Animation::setWidgetToAnimate(widget);
if (widget) {
setCopy();
}
}
void PulseAnimation::setCopy()
{
QGraphicsWidget *target = widgetToAnimate();
/* the parent to an image, the animation will happen on the pixmap copy.
*/
if (!under)
under = new ShadowFake;
under->copyTarget(target);
zvalue = target->zValue();
--zvalue;
scale = target->scale();
under->setOpacity(mopacity);
under->setScale(scale);
under->setZValue(zvalue);
}
void PulseAnimation::resetPulser()
{
under->setOpacity(mopacity);
under->setScale(scale);
under->setZValue(zvalue);
}
void PulseAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
{
if (oldState == Stopped && newState == Running) {
if (under->size() != widgetToAnimate()->size()) {
setCopy();
}
under->setOpacity(direction() == Forward ? 1 : 0);
under->setScale(direction() == Forward ? scale : endScale);
} else if (newState == Stopped) {
resetPulser();
}
}
void PulseAnimation::updateCurrentTime(int currentTime)
{
QGraphicsWidget *w = under;
if (w) {
qreal delta = Animation::easingCurve().valueForProgress(
currentTime / qreal(duration()));
delta = (1 - endScale) * delta;
w->setScale(1 - delta);
}
if (w) {
qreal delta = currentTime / qreal(duration());
if (direction() == Forward) {
w->setOpacity(1.0 - delta);
} else if (direction() == Backward) {
w->setOpacity(delta);
}
}
Animation::updateCurrentTime(currentTime);
}
} //namespace Plasma