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Diffstat (limited to 'src/gui/effects/qgraphicseffect.h')
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1 files changed, 277 insertions, 0 deletions
diff --git a/src/gui/effects/qgraphicseffect.h b/src/gui/effects/qgraphicseffect.h new file mode 100644 index 0000000..99d8548 --- /dev/null +++ b/src/gui/effects/qgraphicseffect.h @@ -0,0 +1,277 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QGRAPHICSEFFECT_H +#define QGRAPHICSEFFECT_H + +#include <QtCore/qobject.h> +#include <QtCore/qpoint.h> +#include <QtCore/qrect.h> +#include <QtGui/qcolor.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Gui) + +class QGraphicsItem; +class QStyleOption; +class QPainter; +class QPixmap; + +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) 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 QWidget; + friend class QWidgetPrivate; +}; + +class QGraphicsEffectPrivate; +class Q_GUI_EXPORT QGraphicsEffect : public QObject +{ + Q_OBJECT + Q_FLAGS(ChangeFlags) + Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged) +public: + enum ChangeFlag { + SourceAttached = 0x1, + SourceDetached = 0x2, + SourceBoundingRectChanged = 0x4, + SourceInvalidated = 0x8 + }; + Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag); + + QGraphicsEffect(QObject *parent = 0); + virtual ~QGraphicsEffect(); + + virtual QRectF boundingRectFor(const QRectF &rect) const; + QRectF boundingRect() const; + + QGraphicsEffectSource *source() const; + + bool isEnabled() const; + +public Q_SLOTS: + void setEnabled(bool enable); + // ### add update() slot + +Q_SIGNALS: + void enabledChanged(bool enabled); + +protected: + QGraphicsEffect(QGraphicsEffectPrivate &d, QObject *parent = 0); + virtual void draw(QPainter *painter, QGraphicsEffectSource *source) = 0; + virtual void sourceChanged(ChangeFlags flags); + void updateBoundingRect(); + +private: + Q_DECLARE_PRIVATE(QGraphicsEffect) + Q_DISABLE_COPY(QGraphicsEffect) + friend class QGraphicsItem; + friend class QGraphicsItemPrivate; + friend class QGraphicsScenePrivate; + friend class QWidget; + friend class QWidgetPrivate; +}; +Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsEffect::ChangeFlags); + +class QGraphicsGrayscaleEffectPrivate; +class Q_GUI_EXPORT QGraphicsGrayscaleEffect: public QGraphicsEffect +{ + Q_OBJECT +public: + QGraphicsGrayscaleEffect(QObject *parent = 0); + ~QGraphicsGrayscaleEffect(); + +protected: + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + Q_DECLARE_PRIVATE(QGraphicsGrayscaleEffect) + Q_DISABLE_COPY(QGraphicsGrayscaleEffect) +}; + +class QGraphicsColorizeEffectPrivate; +class Q_GUI_EXPORT QGraphicsColorizeEffect: public QGraphicsEffect +{ + Q_OBJECT + Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) +public: + QGraphicsColorizeEffect(QObject *parent = 0); + ~QGraphicsColorizeEffect(); + + QColor color() const; + +public Q_SLOTS: + void setColor(const QColor &c); + +Q_SIGNALS: + void colorChanged(const QColor &color); + +protected: + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + Q_DECLARE_PRIVATE(QGraphicsColorizeEffect) + Q_DISABLE_COPY(QGraphicsColorizeEffect) +}; + +class QGraphicsPixelizeEffectPrivate; +class Q_GUI_EXPORT QGraphicsPixelizeEffect: public QGraphicsEffect +{ + Q_OBJECT + Q_PROPERTY(int pixelSize READ pixelSize WRITE setPixelSize NOTIFY pixelSizeChanged) +public: + QGraphicsPixelizeEffect(QObject *parent = 0); + ~QGraphicsPixelizeEffect(); + + int pixelSize() const; + +public Q_SLOTS: + void setPixelSize(int pixelSize); + +Q_SIGNALS: + void pixelSizeChanged(int pixelSize); + +protected: + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + Q_DECLARE_PRIVATE(QGraphicsPixelizeEffect) + Q_DISABLE_COPY(QGraphicsPixelizeEffect) +}; + +class QGraphicsBlurEffectPrivate; +class Q_GUI_EXPORT QGraphicsBlurEffect: public QGraphicsEffect +{ + Q_OBJECT + Q_PROPERTY(int blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) +public: + QGraphicsBlurEffect(QObject *parent = 0); + ~QGraphicsBlurEffect(); + + QRectF boundingRectFor(const QRectF &rect) const; + int blurRadius() const; + +public Q_SLOTS: + void setBlurRadius(int blurRadius); + +Q_SIGNALS: + void blurRadiusChanged(int blurRadius); + +protected: + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + Q_DECLARE_PRIVATE(QGraphicsBlurEffect) + Q_DISABLE_COPY(QGraphicsBlurEffect) +}; + +class QGraphicsDropShadowEffectPrivate; +class Q_GUI_EXPORT QGraphicsDropShadowEffect: public QGraphicsEffect +{ + Q_OBJECT + Q_PROPERTY(QPointF offset READ offset WRITE setOffset NOTIFY offsetChanged) + Q_PROPERTY(int blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) + Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) +public: + QGraphicsDropShadowEffect(QObject *parent = 0); + ~QGraphicsDropShadowEffect(); + + QRectF boundingRectFor(const QRectF &rect) const; + QPointF offset() const; + int blurRadius() const; + QColor color() const; + +public Q_SLOTS: + void setOffset(const QPointF &ofs); + inline void setOffset(qreal dx, qreal dy) + { setOffset(QPointF(dx, dy)); } + inline void setOffset(qreal d) + { setOffset(QPointF(d, d)); } + void setBlurRadius(int blurRadius); + void setColor(const QColor &color); + +Q_SIGNALS: + void offsetChanged(const QPointF &offset); + void blurRadiusChanged(int blurRadius); + void colorChanged(const QColor &color); + +protected: + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + Q_DECLARE_PRIVATE(QGraphicsDropShadowEffect) + Q_DISABLE_COPY(QGraphicsDropShadowEffect) +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QGRAPHICSEFFECT_H + |