mirror of
https://bitbucket.org/smil3y/kde-workspace.git
synced 2025-02-25 19:32:52 +00:00
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
|
/*
|
||
|
|
* Copyright 2013 Aurélien Gâteau <agateau@kde.org>
|
||
|
|
*
|
||
|
|
* 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 Library 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.
|
||
|
|
*/
|
||
|
|
#ifndef SHADOWEFFECT_H
|
||
|
|
#define SHADOWEFFECT_H
|
||
|
|
|
||
|
|
// Qt
|
||
|
|
#include <QGraphicsEffect>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* An effect which draws a shadow behind an item, using
|
||
|
|
* Plasma::PaintUtils::shadowBlur()
|
||
|
|
*
|
||
|
|
* If the color is not specified, it will attempt to compute the best
|
||
|
|
* appropriate color, based on the item "color" property (if it has any).
|
||
|
|
*/
|
||
|
|
class ShadowEffect : public QGraphicsEffect
|
||
|
|
{
|
||
|
|
Q_OBJECT
|
||
|
|
Q_PROPERTY(qreal xOffset READ xOffset WRITE setXOffset NOTIFY xOffsetChanged)
|
||
|
|
Q_PROPERTY(qreal yOffset READ yOffset WRITE setYOffset NOTIFY yOffsetChanged)
|
||
|
|
Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged)
|
||
|
|
Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
|
||
|
|
public:
|
||
|
|
explicit ShadowEffect(QObject *parent = 0);
|
||
|
|
~ShadowEffect();
|
||
|
|
|
||
|
|
QRectF boundingRectFor(const QRectF &rect) const; // reimp
|
||
|
|
|
||
|
|
qreal xOffset() const;
|
||
|
|
|
||
|
|
qreal yOffset() const;
|
||
|
|
|
||
|
|
qreal blurRadius() const;
|
||
|
|
QColor color() const;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Use this method if you set the color manually and now want ShadowEffect
|
||
|
|
* to pick the color automatically, based on the color of the item on which
|
||
|
|
* the effect is applied.
|
||
|
|
*/
|
||
|
|
Q_INVOKABLE void resetColor();
|
||
|
|
|
||
|
|
public Q_SLOTS:
|
||
|
|
void setXOffset(qreal dx);
|
||
|
|
void setYOffset(qreal dy);
|
||
|
|
void setBlurRadius(qreal blurRadius);
|
||
|
|
void setColor(const QColor &color);
|
||
|
|
|
||
|
|
Q_SIGNALS:
|
||
|
|
void xOffsetChanged(qreal);
|
||
|
|
void yOffsetChanged(qreal);
|
||
|
|
void blurRadiusChanged(qreal blurRadius);
|
||
|
|
void colorChanged(const QColor &color);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void draw(QPainter *painter); // reimp
|
||
|
|
void sourceChanged(ChangeFlags flags); // reimp
|
||
|
|
|
||
|
|
private:
|
||
|
|
qreal m_xOffset;
|
||
|
|
qreal m_yOffset;
|
||
|
|
qreal m_blurRadius;
|
||
|
|
QColor m_color;
|
||
|
|
|
||
|
|
QImage m_shadow;
|
||
|
|
|
||
|
|
QImage generateShadow(const QPixmap &px) const;
|
||
|
|
|
||
|
|
QColor computeColorFromSource() const;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* SHADOWEFFECT_H */
|