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288 lines
8.5 KiB
C++
288 lines
8.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QGRAPHICSEFFECT_H
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#define QGRAPHICSEFFECT_H
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#include <QtCore/qobject.h>
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#include <QtCore/qpoint.h>
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#include <QtCore/qrect.h>
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#include <QtGui/qcolor.h>
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#include <QtGui/qbrush.h>
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#ifndef QT_NO_GRAPHICSEFFECT
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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class QGraphicsItem;
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class QStyleOption;
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class QPainter;
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class QPixmap;
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class QGraphicsEffectSource;
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class QGraphicsEffectPrivate;
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class Q_GUI_EXPORT QGraphicsEffect : public QObject
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{
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Q_OBJECT
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Q_FLAGS(ChangeFlags)
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Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged)
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public:
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enum ChangeFlag {
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SourceAttached = 0x1,
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SourceDetached = 0x2,
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SourceBoundingRectChanged = 0x4,
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SourceInvalidated = 0x8
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};
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Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag)
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enum PixmapPadMode {
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NoPad,
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PadToTransparentBorder,
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PadToEffectiveBoundingRect
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};
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QGraphicsEffect(QObject *parent = Q_NULLPTR);
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virtual ~QGraphicsEffect();
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virtual QRectF boundingRectFor(const QRectF &sourceRect) const;
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QRectF boundingRect() const;
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bool isEnabled() const;
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public Q_SLOTS:
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void setEnabled(bool enable);
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void update();
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Q_SIGNALS:
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void enabledChanged(bool enabled);
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protected:
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QGraphicsEffect(QGraphicsEffectPrivate &d, QObject *parent = Q_NULLPTR);
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virtual void draw(QPainter *painter) = 0;
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virtual void sourceChanged(ChangeFlags flags);
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void updateBoundingRect();
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bool sourceIsPixmap() const;
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QRectF sourceBoundingRect(Qt::CoordinateSystem system = Qt::LogicalCoordinates) const;
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void drawSource(QPainter *painter);
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QPixmap sourcePixmap(Qt::CoordinateSystem system = Qt::LogicalCoordinates,
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QPoint *offset = Q_NULLPTR,
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PixmapPadMode mode = PadToEffectiveBoundingRect) const;
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private:
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Q_DECLARE_PRIVATE(QGraphicsEffect)
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Q_DISABLE_COPY(QGraphicsEffect)
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friend class QGraphicsItem;
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friend class QGraphicsItemPrivate;
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friend class QGraphicsScenePrivate;
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friend class QWidget;
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friend class QWidgetPrivate;
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public:
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QGraphicsEffectSource *source() const; // internal
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsEffect::ChangeFlags)
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class QGraphicsColorizeEffectPrivate;
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class Q_GUI_EXPORT QGraphicsColorizeEffect: public QGraphicsEffect
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{
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Q_OBJECT
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Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
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Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged)
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public:
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QGraphicsColorizeEffect(QObject *parent = Q_NULLPTR);
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~QGraphicsColorizeEffect();
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QColor color() const;
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qreal strength() const;
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public Q_SLOTS:
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void setColor(const QColor &c);
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void setStrength(qreal strength);
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Q_SIGNALS:
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void colorChanged(const QColor &color);
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void strengthChanged(qreal strength);
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protected:
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void draw(QPainter *painter);
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private:
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Q_DECLARE_PRIVATE(QGraphicsColorizeEffect)
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Q_DISABLE_COPY(QGraphicsColorizeEffect)
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};
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class QGraphicsBlurEffectPrivate;
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class Q_GUI_EXPORT QGraphicsBlurEffect: public QGraphicsEffect
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{
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Q_OBJECT
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Q_FLAGS(BlurHint BlurHints)
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Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged)
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Q_PROPERTY(BlurHints blurHints READ blurHints WRITE setBlurHints NOTIFY blurHintsChanged)
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public:
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enum BlurHint {
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PerformanceHint = 0x00,
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QualityHint = 0x01,
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AnimationHint = 0x02
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};
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Q_DECLARE_FLAGS(BlurHints, BlurHint)
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QGraphicsBlurEffect(QObject *parent = Q_NULLPTR);
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~QGraphicsBlurEffect();
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QRectF boundingRectFor(const QRectF &rect) const;
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qreal blurRadius() const;
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BlurHints blurHints() const;
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public Q_SLOTS:
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void setBlurRadius(qreal blurRadius);
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void setBlurHints(BlurHints hints);
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Q_SIGNALS:
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void blurRadiusChanged(qreal blurRadius);
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void blurHintsChanged(BlurHints hints);
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protected:
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void draw(QPainter *painter);
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private:
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Q_DECLARE_PRIVATE(QGraphicsBlurEffect)
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Q_DISABLE_COPY(QGraphicsBlurEffect)
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsBlurEffect::BlurHints)
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class QGraphicsDropShadowEffectPrivate;
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class Q_GUI_EXPORT QGraphicsDropShadowEffect: public QGraphicsEffect
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{
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Q_OBJECT
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Q_PROPERTY(QPointF offset READ offset WRITE setOffset NOTIFY offsetChanged)
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Q_PROPERTY(qreal xOffset READ xOffset WRITE setXOffset NOTIFY offsetChanged)
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Q_PROPERTY(qreal yOffset READ yOffset WRITE setYOffset NOTIFY offsetChanged)
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Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged)
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Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
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public:
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QGraphicsDropShadowEffect(QObject *parent = Q_NULLPTR);
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~QGraphicsDropShadowEffect();
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QRectF boundingRectFor(const QRectF &rect) const;
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QPointF offset() const;
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inline qreal xOffset() const
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{ return offset().x(); }
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inline qreal yOffset() const
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{ return offset().y(); }
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qreal blurRadius() const;
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QColor color() const;
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public Q_SLOTS:
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void setOffset(const QPointF &ofs);
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inline void setOffset(qreal dx, qreal dy)
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{ setOffset(QPointF(dx, dy)); }
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inline void setOffset(qreal d)
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{ setOffset(QPointF(d, d)); }
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inline void setXOffset(qreal dx)
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{ setOffset(QPointF(dx, yOffset())); }
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inline void setYOffset(qreal dy)
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{ setOffset(QPointF(xOffset(), dy)); }
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void setBlurRadius(qreal blurRadius);
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void setColor(const QColor &color);
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Q_SIGNALS:
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void offsetChanged(const QPointF &offset);
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void blurRadiusChanged(qreal blurRadius);
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void colorChanged(const QColor &color);
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protected:
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void draw(QPainter *painter);
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private:
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Q_DECLARE_PRIVATE(QGraphicsDropShadowEffect)
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Q_DISABLE_COPY(QGraphicsDropShadowEffect)
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};
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class QGraphicsOpacityEffectPrivate;
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class Q_GUI_EXPORT QGraphicsOpacityEffect: public QGraphicsEffect
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{
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Q_OBJECT
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Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity NOTIFY opacityChanged)
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Q_PROPERTY(QBrush opacityMask READ opacityMask WRITE setOpacityMask NOTIFY opacityMaskChanged)
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public:
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QGraphicsOpacityEffect(QObject *parent = Q_NULLPTR);
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~QGraphicsOpacityEffect();
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qreal opacity() const;
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QBrush opacityMask() const;
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public Q_SLOTS:
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void setOpacity(qreal opacity);
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void setOpacityMask(const QBrush &mask);
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Q_SIGNALS:
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void opacityChanged(qreal opacity);
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void opacityMaskChanged(const QBrush &mask);
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protected:
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void draw(QPainter *painter);
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private:
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Q_DECLARE_PRIVATE(QGraphicsOpacityEffect)
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Q_DISABLE_COPY(QGraphicsOpacityEffect)
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif //QT_NO_GRAPHICSEFFECT
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#endif // QGRAPHICSEFFECT_H
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