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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGRAPHICSEFFECT_P_H
#define QGRAPHICSEFFECT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//
#include "qgraphicseffect.h"
#include <QPixmapCache>
#include <private/qobject_p.h>
#include <private/qpixmapfilter_p.h>
#ifndef QT_NO_GRAPHICSEFFECT
QT_BEGIN_NAMESPACE
class QGraphicsEffectSourcePrivate;
class Q_GUI_EXPORT QGraphicsEffectSource : public QObject
{
Q_OBJECT
public:
~QGraphicsEffectSource();
const QGraphicsItem *graphicsItem() const;
const QWidget *widget() const;
const QStyleOption *styleOption() const;
bool isPixmap() const;
void draw(QPainter *painter);
void update();
QRectF boundingRect(Qt::CoordinateSystem coordinateSystem = Qt::LogicalCoordinates) const;
QRect deviceRect() const;
QPixmap pixmap(Qt::CoordinateSystem system = Qt::LogicalCoordinates,
QPoint *offset = 0,
QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToEffectiveBoundingRect) const;
protected:
QGraphicsEffectSource(QGraphicsEffectSourcePrivate &dd, QObject *parent = 0);
private:
Q_DECLARE_PRIVATE(QGraphicsEffectSource)
Q_DISABLE_COPY(QGraphicsEffectSource)
friend class QGraphicsEffect;
friend class QGraphicsEffectPrivate;
friend class QGraphicsScenePrivate;
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
friend class QWidget;
friend class QWidgetPrivate;
};
class QGraphicsEffectSourcePrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsEffectSource)
public:
QGraphicsEffectSourcePrivate()
: QObjectPrivate()
, m_cachedSystem(Qt::DeviceCoordinates)
, m_cachedMode(QGraphicsEffect::PadToTransparentBorder)
{}
enum InvalidateReason
{
TransformChanged,
EffectRectChanged,
SourceChanged
};
virtual ~QGraphicsEffectSourcePrivate();
virtual void detach() = 0;
virtual QRectF boundingRect(Qt::CoordinateSystem system) const = 0;
virtual QRect deviceRect() const = 0;
virtual const QGraphicsItem *graphicsItem() const = 0;
virtual const QWidget *widget() const = 0;
virtual const QStyleOption *styleOption() const = 0;
virtual void draw(QPainter *p) = 0;
virtual void update() = 0;
virtual bool isPixmap() const = 0;
virtual QPixmap pixmap(Qt::CoordinateSystem system, QPoint *offset = 0,
QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToTransparentBorder) const = 0;
virtual void effectBoundingRectChanged() = 0;
void setCachedOffset(const QPoint &offset);
void invalidateCache(InvalidateReason reason = SourceChanged) const;
Qt::CoordinateSystem currentCachedSystem() const { return m_cachedSystem; }
QGraphicsEffect::PixmapPadMode currentCachedMode() const { return m_cachedMode; }
friend class QGraphicsScenePrivate;
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
private:
mutable Qt::CoordinateSystem m_cachedSystem;
mutable QGraphicsEffect::PixmapPadMode m_cachedMode;
mutable QPoint m_cachedOffset;
mutable QPixmapCache::Key m_cacheKey;
};
class Q_GUI_EXPORT QGraphicsEffectPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsEffect)
public:
QGraphicsEffectPrivate() : source(0), isEnabled(1) {}
inline void setGraphicsEffectSource(QGraphicsEffectSource *newSource)
{
QGraphicsEffect::ChangeFlags flags;
if (source) {
flags |= QGraphicsEffect::SourceDetached;
source->d_func()->invalidateCache();
source->d_func()->detach();
delete source;
}
source = newSource;
if (newSource)
flags |= QGraphicsEffect::SourceAttached;
q_func()->sourceChanged(flags);
}
QGraphicsEffectSource *source;
QRectF boundingRect;
quint32 isEnabled : 1;
quint32 padding : 31; // feel free to use
};
class QGraphicsColorizeEffectPrivate : public QGraphicsEffectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsColorizeEffect)
public:
QGraphicsColorizeEffectPrivate()
: opaque(true)
{
filter = new QPixmapColorizeFilter;
}
~QGraphicsColorizeEffectPrivate() { delete filter; }
QPixmapColorizeFilter *filter;
quint32 opaque : 1;
quint32 padding : 31;
};
class QGraphicsBlurEffectPrivate : public QGraphicsEffectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsBlurEffect)
public:
QGraphicsBlurEffectPrivate() : filter(new QPixmapBlurFilter) {}
~QGraphicsBlurEffectPrivate() { delete filter; }
QPixmapBlurFilter *filter;
};
class QGraphicsDropShadowEffectPrivate : public QGraphicsEffectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsDropShadowEffect)
public:
QGraphicsDropShadowEffectPrivate() : filter(new QPixmapDropShadowFilter) {}
~QGraphicsDropShadowEffectPrivate() { delete filter; }
QPixmapDropShadowFilter *filter;
};
class QGraphicsOpacityEffectPrivate : public QGraphicsEffectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsOpacityEffect)
public:
QGraphicsOpacityEffectPrivate()
: opacity(qreal(0.7)), isFullyTransparent(0), isFullyOpaque(0), hasOpacityMask(0) {}
~QGraphicsOpacityEffectPrivate() {}
qreal opacity;
QBrush opacityMask;
uint isFullyTransparent : 1;
uint isFullyOpaque : 1;
uint hasOpacityMask : 1;
};
QT_END_NAMESPACE
#endif //QT_NO_GRAPHICSEFFECT
#endif // QGRAPHICSEFFECT_P_H
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