plasma-framework/animations/pulser_p.h

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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.
*/
/**
* @file This file contains the definition for the Pulse effect.
*/
#ifndef PLASMA_ANIMATIONS_PULSER_P_H
#define PLASMA_ANIMATIONS_PULSER_P_H
#include <plasma/animations/animation.h>
#include <plasma/plasma_export.h>
namespace Plasma
{
class ShadowFake;
/**
* @class PulseAnimation plasma/animations/pulser_p.h
* @short Pulse effect
*
* Effect that pulses a shadow copy of any QGraphicsWidget making
* it more translucent and bigger along the time until it vanishes.
*/
class PulseAnimation : public Animation
{
Q_OBJECT
public:
/** Default Constructor */
PulseAnimation(QObject *parent = 0);
/** Destructor */
~PulseAnimation();
/**
* Set the widget on which the animation is to be performed.
*
* This animation reimplements it to create the shadow copy of
* the animated widget. The shadow is the one that is actually
* animated (see \ref ShadowFake).
* @arg receiver The QGraphicsWidget to be animated.
*/
void setWidgetToAnimate(QGraphicsWidget *widget);
public Q_SLOTS:
/**
* Resets the shadow widget to its initial state (full translucent
* and with same geometry as the target widget). It is executed
* when the animation is over.
*/
void resetPulser();
protected:
void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState);
void updateCurrentTime(int currentTime);
void setCopy();
private:
/** Zvalue (tipically -1 than the target widget) */
qreal zvalue;
/** Original widget scale */
qreal scale;
/** Opacity of shadow widget (full translucent) */
qreal mopacity;
/** Target scale of shadow widget (default is 1.5x the animated
* widget scale).
*/
qreal endScale;
/** The shadow copy (it really is a QGraphicsWidget with a pixmap
* copy of the original widget).
*/
ShadowFake *under;
};
}
#endif // PLASMA_ANIMATIONS_PULSER_P_H